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Hot Topic (More than 30 Replies) DPT vs Hardy vs Gunworks Suppressor Review (Read 3450 times)
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DPT vs Hardy vs Gunworks Suppressor Review
Jun 11th, 2014 at 7:47am
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This is a carry on from the previous thread where I was fortunate enough to have CraigC send me his Dan Hardy Gen 4 suppressor to test.

Previous Thread
http://www.fishnhunt.co.nz/forum/YaBB.cgi?num=1401860437/all

So for this test I was fortunate enough to have a Dan Hardy Generation four suppressor, Canterbury Gunworks Suppressor & a DPT modular suppressor to test



Our tests and the results shown below are what we achieved and observed and are an unbiased report and even we were surprised with the results!

On this occasion I had two friends accompany me to the range where we ran two tests, one was with the sound metre and the other was based on our hearing.

The ammo that we used this time was some Barnaul 55 grain .223 ammo that was on hand rather than my reloads as we were using a fair bit of ammo for all the tests.

Gunworks Suppressor
http://www.gunworks.co.nz/suppressors.html

WEIGHT: 357 grams
OVERALL LENGTH: 320 mm
MUZZLE FORWARD: 130 mm

This is my personal suppressor which has aluminium internals as opposed to their stainless ones so I can keep weight down. Its served me very well.




DPT Suppressor
http://www.dpt.co.nz/

WEIGHT: 260 Grams
OVERALL LENGTH: 205 mm
MUZZLE FORWARD: 105 mm




Dan Hardy Suppressors
http://hardyrifleengineering.co.nz/store/index.php/suppressors.html

WEIGHT: 303 grams
OVERALL LENGTH: 205 mm
MUZZLE FORWARD: 80mm



For the initial test we tested the suppressors based on our hearing.

I had my two mates stand behind me 7 metres away with their backs to me as I fired three rounds through each suppressor in an unknown order so they could tell me which one was the quietest to loudest without knowing which suppressor I was using.

The result was they all soundest similar in sound but the Hardy suppressor was a tad louder.

We ran this test again but with the boys standing seven metres to my right and there they commented that the Gunworks and DPT were of the same level but the Hardy was distinctly louder.

I'm not sure if this is due to the ports at the end of the Hardy suppressor which may send sound outwards as it does with a muzzle brake!

Even as the shooter I noticed the Hardy to be louder when compared to the others.

The second test was with the use of the sound metre that we had. While this isn't a flash metering device it does give an "indication" of sound level so take the readings at face value but as I've said before and i'll say it again the only way to truly test sound is via the use of a proper sound testing laboratory which I don't have access to!

The sound metre was placed just to my left as I fired a number of shots which were averaged out to give these results:

Canterbury Gunworks: 115.5 db
Dan Hardy: 115.9 db
DPT: 113.7 db

In all honesty we spent more time evaluating the suppressors through the use of our own hearing where we all noticed the Hardy as being louder so based on what BC said on the last thread where he took one baffle off his DPT and didn't notice any sound reduction I was keen to also try that.

BC... your right... I didn't notice much sound increase so I took another baffle off and sure enough the sound level was now up there with the Hardy suppressor in that it was louder with the loss of two baffles!

We weighed the DPT minus the two baffles and it came in at 206 grams

Below photo shows the DPT shortened which gave the same sound signature as the Hardy. I've also placed the suppressors side by side to show how they sit on the rifle as the Hardy does sit back further on the barrel.



Accuracy
Unlike the last post where I put up some target pictures I didn't on this occasion however I must say that all three suppressors helped produced under half inch groups at 100 metres when I switched over to my reloads to check the suppressors for accuracy.

Conclusion
While some may argue with our test results I haven't posted this thread to discourage or incourage purchasing one suppressor over the other but as a mere unbiased means to inform people of what we found as there are always posts from people asking for comparisons.

While some people will argue my use of the sound meter then so be it but that's why we also put the suppressors through the sound hearing test to listen to which one is louder.

I could have videoed the results but then again it comes down to how well the equipment I'm using to record the sound and again how well is the sound on your computer to play it which is just to many variables to contemplate!
  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #1 - Jun 11th, 2014 at 8:10am
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Seventenths this is an immaculate experiment.
Specially interesting as I've just heard back from Beretta who I asked for advice and they said they mostly used Hardy to supply and  install. There could be other good reasons for that.  I hadn't previously considered Hardy so it's good to see a review of it.  I think your idea of having blinded observers rate them subjectively is very "sound".  Considering the technical difficulties in measuring muzzle blast.

Thanks also for trying the modular minus some modules.  Very interesting the apparent effectiveness of the overbarrel part vs in front in noise reduction.  Maybe the DPT scored a bit better because it had more forward of the muzzle when it had the full 5.  And having more back over the barrel doesn't really pull the same weight.



  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #2 - Jun 11th, 2014 at 8:16am
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great work..thankyou for your efforts and for sharing results. Wink
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #3 - Jun 11th, 2014 at 8:44am
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Cheers 7/10ths. Great read there

  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #4 - Jun 11th, 2014 at 8:48am
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Yep hardy cans aren't the be all and end all of the market. DPT makes a great product.

Id be interested to see a test of all the hardy models back to back
  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #5 - Jun 11th, 2014 at 9:30am
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It's good to see a review of sort. Well done.
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #6 - Jun 11th, 2014 at 6:35pm
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Would have been interesting to know the sound meter reading for an unsuppressed rifle shot.

I tried using a "cheapy" sound meter for similar testing once & gave up once I realised the data was severely flawed & worthless.

I have a mate that built up "proper" sound gear for testing suppressor sound signatures, the microphone/pressure sensor alone was $7K  Shocked

I must get around to finding some time to do some testing with it sometime  Smiley
  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #7 - Jun 11th, 2014 at 7:24pm
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on the info site they state any noise above 80 db is cause for concern Shocked
so much for suppressors,,wouldnt be without mine tho
  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #8 - Jun 11th, 2014 at 7:33pm
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Lot of effort.Great info.Thanks for taking time to do that.Must help people to make a more informed decision. Wink
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #9 - Jun 11th, 2014 at 8:46pm
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sako wrote on Jun 11th, 2014 at 7:33pm:
Lot of effort.Great info.Thanks for taking time to do that.Must help people to make a more informed decision. Wink

+1
Looks like DPT are going to be busy boys
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #10 - Jun 11th, 2014 at 9:29pm
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That just reinforces my previous thoughts on suppressors. DPT are producing an excellent product that for the price is very very hard to beat. Cheers for carrying out the test  Cool
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #11 - Jun 11th, 2014 at 10:13pm
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Awesome! thanks for that you just made my suppressor purchasing dilemma so much easier.
  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #12 - Jun 11th, 2014 at 11:55pm
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So seventenths have I got this right: the DPT with 2 baffles removed is equally quiet and is shorter muzzle forward and lighter than the Hardy?  How is the length & weight with only 1 baffle removed - i.e. what is the length & weight of each removable baffle? cheers
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #13 - Jun 12th, 2014 at 12:34am
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Another thought or test could be to add baffles to the DPT suppressor so it gains some weight and length so it is similar to the gunworks suppressor... say to 300grams and over all length of 300mm and then see how much quieter it is then with extra baffles for itl still come out shorter and lighter than the gunworks supressor  Smiley
  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #14 - Jun 12th, 2014 at 4:05am
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luckey wrote on Jun 11th, 2014 at 11:55pm:
So seventenths have I got this right: the DPT with 2 baffles removed is equally quiet and is shorter muzzle forward and lighter than the Hardy?  How is the length & weight with only 1 baffle removed - i.e. what is the length & weight of each removable baffle? cheers


25gms and 17mm according to their website  Wink.

Just got my DPT a few days back, went and sighted in yesterday and took it out to test it on some stinkies.  No complaints at all from the 3 I shot  Grin

Thanks for posting
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #15 - Jun 12th, 2014 at 5:50am
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I bought a hardy AR specific supressor for my AR when i first got it,my mate had bought a DPT so one day whilst having a bit of lead therapy we thought we'd compare em, the DPT was significantly quieter and lighter.

This review only reinforces what i thought i already knew albeit mine was done with out the gear but just on what we heard. A very fair test indeed. +1
  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #16 - Jun 17th, 2014 at 7:26am
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Has anyone tested the change in zero if you add/remove baffles from the DPT?
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #17 - Jun 23rd, 2014 at 12:29am
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Good write up,

How did the dpt feel in the hand compared to the gunworks one? Did the alloy feel or sound thinner? tinnier? There must be some reason why the gunworks is heavier? sturdier? I'm having trouble deciding what to put on my 708 tikka!

Cheers Smiley
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #18 - Jun 23rd, 2014 at 12:37am
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thanks for going to that effort Cool im just looking at suppressing a rifle and was wondering which brand to go with. great to see the comparable info all in one place.
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #19 - Jun 23rd, 2014 at 12:55am
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Yep, a great resource, cheers 7/10's.

Hopefully the DPT I ordered through a local store will be here soon.  Cool Darren, if you read this, the H&J's one is for me, get a wriggle on  Grin
  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #20 - Jun 23rd, 2014 at 5:00am
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Out of interest do you know off hand what the rough price of each of those suppressors are?

The ex shouted me a hardy for the 22-250 and it tamed the noise a heap. They are a loud thing though so these must make a 223 really quiet.

Was about $550

Even just the price of the DPT?

Cheers for this, good to see a side by side review of them
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #21 - Jun 23rd, 2014 at 5:08am
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Turns out that is all available on the internet - DPT a fair whack cheaper.
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #22 - Jun 23rd, 2014 at 6:12am
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Awesome post THIS is why I hang around this forum. Once you wade through all the bitching and moaning and personal agendas you get to read little gems like this.
Well done
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #23 - Jun 23rd, 2014 at 7:18am
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johnd wrote on Jun 23rd, 2014 at 6:12am:
Awesome post THIS is why I hang around this forum. Once you wade through all the bitching and moaning and personal agendas you get to read little gems like this.
Well done


Now would that mean that you are bitching and moaning about other people bitching and moaning?
Contradictory don't you think? Wink
Great original post though, and screamingly fair, though I will be going to DPT if I ever need a can.
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #24 - Jul 16th, 2014 at 10:49pm
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has anyone bought a DPT can suppressor for their Bushpig type rifle?   or all overbarrels?
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #25 - Jul 16th, 2014 at 11:30pm
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Probably half of the North Island
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #26 - Jul 17th, 2014 at 4:50am
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Jimmy_ wrote on Jul 16th, 2014 at 10:49pm:
has anyone bought a DPT can suppressor for their Bushpig type rifle?   or all overbarrels?


Yes, a mate just put a DPT over barrel suppressor on his Tikka T3 7mm-08 where the barrel was cut back to 16 inches... The whole package works a charm.
« Last Edit: Jul 17th, 2014 at 12:45pm by seventenths »  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #27 - Jul 17th, 2014 at 10:03am
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seams we get the same results when evaluating by listening this was a test we did in February last year similar results

http://www.fishnhunt.co.nz/forum/YaBB.cgi?num=1360719178/0

https://www.youtube.com/watch?v=ZsSZdl-CXPE
ODL doesn't like being on camera so the condition for putting the video up was that he not be identifiable and i'm using the cheapest editing software on earth Tongue

here he is testing
https://www.youtube.com/watch?v=tXncOIDl4eY
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #28 - Jul 17th, 2014 at 10:19am
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Jimmy_ wrote on Jul 16th, 2014 at 10:49pm:
has anyone bought a DPT can suppressor for their Bushpig type rifle?   or all overbarrels?

I just put an over barrel on my rugger compact.  It works well.
  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #29 - Jul 17th, 2014 at 10:19am
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Jimmy_ wrote on Jul 16th, 2014 at 10:49pm:
has anyone bought a DPT can suppressor for their Bushpig type rifle?   or all overbarrels?

I have a DPT overbarrel (same as the one in this thread) on my 308 Savage 99, 13" barrel. Works great, shoots a foot of flame even with suppressor on. Darren from DPT reckoned the internals will be fine.


edit: here you go https://www.youtube.com/watch?v=gLYKbYXf_sA
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #30 - Jul 18th, 2014 at 3:41am
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Thanks. I ordered an over barrel. Will be testing it out next to my McRae over barrel.
What I was meaning is if anyone had gone with a muzzle forward on a bush pig type set up to save the extra 80ish grams.  Or if the over barrel stability and reduced risk of bending meant that everyone went with over barrels.
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #31 - Jul 18th, 2014 at 10:21pm
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mitch270 wrote on Jul 17th, 2014 at 10:19am:
Jimmy_ wrote on Jul 16th, 2014 at 10:49pm:
has anyone bought a DPT can suppressor for their Bushpig type rifle?   or all overbarrels?

I have a DPT overbarrel (same as the one in this thread) on my 308 Savage 99, 13" barrel. Works great, shoots a foot of flame even with suppressor on. Darren from DPT reckoned the internals will be fine.


edit: here you go https://www.youtube.com/watch?v=gLYKbYXf_sA

That does not sound loud at all.
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #32 - Jul 19th, 2014 at 8:23pm
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Hi all
Good report I have several and all of our work rifles are suppressed. I put a Hardy on my Brno 223 and was a little disappointed with the noise reduction when shooting. The dancan has an intergral muzzle brake built in so I suspected this maybe the cause so with a trusted colleague I sat about 80m forward and to the side and was surprised at the amount of (lack) noise. Kids don't try this at home! When using on game I have been impressed at the lack of disturbance caused to animals in front of the firing point. I also have used suppressors from the tested ones as well as the High Country Sport ones and find they are well constructed and work well. Get the best deal you can, there isn't much between them.
Cheers
Ruger
  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #33 - Jul 20th, 2014 at 3:28am
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Ruger wrote on Jul 19th, 2014 at 8:23pm:
Hi all
Good report I have several and all of our work rifles are suppressed. I put a Hardy on my Brno 223 and was a little disappointed with the noise reduction when shooting. The dancan has an intergral muzzle brake built in so I suspected this maybe the cause so with a trusted colleague I sat about 80m forward and to the side and was surprised at the amount of (lack) noise. Kids don't try this at home! When using on game I have been impressed at the lack of disturbance caused to animals in front of the firing point. I also have used suppressors from the tested ones as well as the High Country Sport ones and find they are well constructed and work well. Get the best deal you can, there isn't much between them.
Cheers
Ruger


I've wondered about the effect of the "muzzlebreak" on the Hardy cans as well and wonder if it is dispersing the sound rather than projecting it forward which makes it sound louder for the shooter.  I've shot animals a number of times with my Hardy can on a 308 bushpig with hot loads then bumped into animals very close by who seem none the wiser.  I shot a hind recently and had a mate about 200m to my left on a grassy paddock and he never heard a thing!

To the guys have who done this testing with a noise meter how about repeating the test with the noise meter 50 then 100m etc forward of the muzzle and /or off to the side.

Perhaps it will be a bit more accurate in terms of the decibel level as well unless you have the super expensive/rare noise meter as the noise won't be as overwhelming for the meter?
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #34 - Jul 20th, 2014 at 4:26am
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At local range today, mates howa 308 with the 20inch pencil barrel, factory threaded. He has just fitted a DPT over barrel suppressor, sound signature about the same as a 22 magnum and very little muzzle jump compared to firing it without the suppressor. I fired a few shots and very impressed with the lack of recoil and the weight of the unit. Great product and well made.
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #35 - Jul 21st, 2014 at 7:33am
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On a related issue. Saw Darren today and raised the issue of cleaning the suppressor via US cleaning but it appears that as the baffles are anodised ali such treatment may nuke your baffle i.e. remove the anodising. Google enquiry confirms this.
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #36 - Aug 9th, 2014 at 2:33am
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Brakelie wrote on Jul 20th, 2014 at 3:28am:
To the guys have who done this testing with a noise meter how about repeating the test with the noise meter 50 then 100m etc forward of the muzzle and /or off to the side.

Perhaps it will be a bit more accurate in terms of the decibel level as well unless you have the super expensive/rare noise meter as the noise won't be as overwhelming for the meter?


It isn't that the sound is overwhelming to the meter so much as it is that the impulse is over before most meters have the ability to register it.  That is why the numbers published above are so low.  The shot impulse is maximum at around .006 seconds and most occupational health meters will be averaging over .05 seconds so the shot is done and gone before the meter starts to record.

Generally accepted practice is to use a meter with no greater than .00002 rise time to catch the entire impulse.  Here is a web site that publishes data and from my experience, provides repeatable testing standards.

http://www.silencerforum.com/forum/showthread.php?649-5.56mm-suppressors-%28and-...

Notice how the sound level is back down to the 115 dB level at around .025 seconds.  Odds are that the meter used above would list the unsuppressed sounds at about the same sound level of 115 (assuming the meter was not damaged) since it is the time component that the meter lacks.

Testing down range should pick up the local supersonic crack of the bullet going past which would be recognizable by anyone who has patched targets in the butts.  The sound from the suppressed rifle at 80 meters should be way less than the local sound of the bullet which is why most animals don't know where the suppressed shot originated since the sound is a localized SNAP sound as it goes by.

There are several meters in NZ that can accurately test sounds.  I have one and I know that there are at least a couple in the NI and a couple in the SI.  They are expensive to get and expensive to maintain.  I just had to spend 1500 to repair and recalibrate my source which is the certified sound signal that is used each time to adjust the meter.
  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #37 - Aug 9th, 2014 at 8:55am
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Been watching this for a while, and now will add some more fuel on the fire too keep it burning, I own and use both Hardy and Gunworks, don't know anything about DPT only what I read and see on here. If I had to pick between these two which is the quitest hard to say maybe very slight advantage to Gunworks, but have heard if you were standing out 50 metres in front of the Hardy they are very quite something to do the angle of the vents (holes) don't think I will ever get to find out.
What "ODL" says in the previous thread maybe talking about this.
Things I like about the Gunworks suppressor, it's longer and thinner so if the barrel is cut back it blends in better with the end of the stock Roll Eyes the problem I have with these short fat suppressors on long skinny profile barrels is they look like someone's screwed on a bake bean tin, also if you mount a low power scope on your rifle and turn down to say 1.75 to 3 power guess what you see in the bottom of the scope Lips Sealed
Ok now one thing which I thinks probably the most important for me (and to some people, it would be on the bottom of the list) the barrel thread protectors, Gunworks is fcuken horrible and cheap looking, Dan Hardys are what I think are the best out there, have never seen the cap off the DPT do they offer this sevice? if so how dose it compare.
I heard the new Hardy Gen 5 suppressor has just completed testing and will be on the market soon,so let's hope Gunworks comes up with something new, then we can change the topic to "North Island Vs South Island' bring it on Smiley
  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #38 - Aug 9th, 2014 at 9:41am
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Mate don't buy DPT. Made us buy 5 so far. Blowed if we are going to Hamilton to buy anymore when Darren moves. Bout time he thought of moving south a bit.
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #39 - Aug 9th, 2014 at 10:46am
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ODL wrote on Aug 9th, 2014 at 2:33am:
There are several meters in NZ that can accurately test sounds.  I have one and I know that there are at least a couple in the NI and a couple in the SI.  They are expensive to get and expensive to maintain.  I just had to spend 1500 to repair and recalibrate my source which is the certified sound signal that is used each time to adjust the meter.


Hi ODL

Have you ever thought of using you meter to do this sort of testing and publishing the results?   I am sure one of the hunting mags or even the supressor makers would pay you well for such results.

It would be nice to have some factual and accurate results rather than earometers and unsuitable equipment, I'm sure the results would lead to further improvements in supressor performance as well.
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #40 - Aug 9th, 2014 at 9:44pm
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Probably not a going-forward idea, a manufacturer with the kit can't really do an 'independent' test...

A large amount of the benefit of the cans is reduction in disturbance to other game, different designs can be tailored to either maximum reduction of volume to the shooter or maximum reduction in sound projection to minimise disturbance to game and masking of the shooter's location.

I've yet to see a suppressor test that reviews all the elements of suppressor performance, 99% are measuring at the shooter's end (which is fine) but not testing what's going on downrange at the target's end...
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #41 - Aug 10th, 2014 at 5:37am
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Interesting thread,

I've been lucky enough to have owned or have mates that own cans from all the major manufacturers in NZ.

I'm so happy we have such a variety of reputable manufacturers in this country that make such excellent products and stand behind them. There really is something to suit every application and budget.

With my limited unscientific experience I really like all  of the suppressors tested in the OP I think all of them are a great product depending on the application.

Thanks for the info.

  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #42 - Aug 10th, 2014 at 5:50am
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Yeah, I have a policy of not publishing any data on any other products except my own.  To do so would be unethical.  Testing takes quite a bit of time and that is something I am in short supply of now.

Good testing should use the mil std procedure which is at 1.6m high and 1m left of the muzzle.  Another test really needs to be run at the shooters right ear since this is most important to hearing loss and one I now do with each new can.  With those you can use calculations to determine the sound at a given distance from the shooter.

One test that I haven't done but might try due to this thread is to get the sound of the bullet at around 100m, 1m from the bullet flight path.

I am in the process of expanding my current peak hold data to full frequency spectrum and time domain analysis via DAQ from the meter to a computer.  I should be able to get both peak hold on the meter as well as the spectrum component on the computer for additional information.

Sound levels are not the only thing to consider when buying a suppressor as long as sound levels at your ear are acceptable to you.  There are many other factors and the shooter in NZ has a lot selection to choose from.

One new offering that is offshore for testing now is a real QD can.  I sent the first prototype unit away for abuse and testing by a group that will give me serious feedback.  This is a real QD and not a brake threaded device.  It locks on with a 60 degree twist and uses a consistent index.  It will be available with brakes made from Titanium, SS and Inconel for various applications.
  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #43 - Aug 10th, 2014 at 5:58am
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Interestingly if you are a right handed shooter your left ear sustains more loss than your right ear and vice versa. I unfortunately know this from personal experience and from futile visits to hearing specialists  both in Aus and NZ.
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #44 - Aug 10th, 2014 at 6:58am
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Yes, that is true and a very good point.  Mainly due to how your head "shadows" the sound from the slight twist to your head on the stock. 

It doesn't change my testing procedures though, since the mic is clear of my head by about 50mm and the right side is where any blast from the chamber opening on an automatic comes from.  So by testing on the right side 50mm from the ear, it will make no difference on a bolt gun and will be worst case scenario on an automatic.
  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #45 - Aug 10th, 2014 at 7:02am
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using subsonic 7.62x39mm 7grns trailboss and a spartan GW can Ive twice shot a rabbit at 15ish yards and its buddy has sat there not knowing whats going on till Ive cycled the bolt to reload.....better/quieter than subsonic .22 in same situation. I hear the shot but it seems bunny did not Undecided
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #46 - Aug 11th, 2014 at 12:33am
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Brakelie wrote on Aug 9th, 2014 at 10:46am:
ODL wrote on Aug 9th, 2014 at 2:33am:
There are several meters in NZ that can accurately test sounds.  I have one and I know that there are at least a couple in the NI and a couple in the SI.  They are expensive to get and expensive to maintain.  I just had to spend 1500 to repair and recalibrate my source which is the certified sound signal that is used each time to adjust the meter.


Hi ODL

Have you ever thought of using you meter to do this sort of testing and publishing the results?   I am sure one of the hunting mags or even the supressor makers would pay you well for such results.

It would be nice to have some factual and accurate results rather than earometers and unsuitable equipment, I'm sure the results would lead to further improvements in supressor performance as well.


Oh man, there would be tears......  That would open up a can of worms for sure.

  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #47 - Sep 7th, 2014 at 5:36am
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this whole thread begs the question...how quiet can we go???? eg DPT can with loads of baffles can you get a supersonic load down to piffft sound???
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #48 - Sep 7th, 2014 at 8:10am
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No. No amount of baffles are going to remove huge supersonic crack are they.
  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #49 - Sep 7th, 2014 at 8:14am
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yip agreed..but still begs the question
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #50 - Sep 7th, 2014 at 9:16pm
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Micky Duck wrote on Sep 7th, 2014 at 8:14am:
yip agreed..but still begs the question


Go as far as you like. Build a suppressor that is 10 times bigger than 'normal'. What do you get?  A bloody great cumbersome mass on the end of the barrel. Up to a certain size there you reach a point of diminishing returns. This will also depend on what the cartridge case size is as well.

ALL suppressors on the general market nowadays are a compromise in some way, and built to a certain size, to what the maker considers acceptable to their targeted market. As a general rule, featherweight/stubby suppressors that may give useful amount of suppression for a sporting rifle, are not in the same league as more robust/heavier units that are built for military or LE applications.   As stated earlier by others, a fair and equitable comparison test must start with correct testing equipment to give reliable and repeatable results.

The sonic crack alone can be in the upper 130 DB range, according to several sources. If all you have to contend with is the hot propellant gas, bigger (beyond a certain point) is not necessarily better, if it makes the weapon too bulky or cumbersome/heavy.
  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #51 - Sep 7th, 2014 at 11:46pm
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if you want quiet go Bow and arrow Smiley
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #52 - Sep 8th, 2014 at 12:33am
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I think , that in NZ , we donot have a manufacturer that makes strong robust suppressors for rifles that will be shot alot , ie like the Mil/LEO do with some of their rifles .
In short , the sniper & assault rifle class.

My cans for my AIs , all come from oversea's makers , as I see nothing in NZ that is anything like them , from BT , AU & ATEC ( old model ) , in the main these are all steel , all SS or a mix of Aluminium & SS , all these cans are inteneded for alot of shooting & abuse .

If you look at the late 80s , the US Navy , put out a request , for a suppressor for 308/300WM rifles , where the cost & weight where not to be main factors , the main factor was maximum sound suppression .
McMillan made the rifles for them , M89 , they made the actions/barrels/cans & stocks etc , the rifles had a 17.5 inche long barrel that had polygonal rifling , the cans where large & long , 1.65 inches in dia & 17.24 inches long , out of 100%  304SS , weighed 1.66kg ( 58.5 ozs ) .
It telescopes back over tha barrel by 6.6 inches , and as such puts the last 6.6 inches of barrel in tension , it used 14 fluted cone baffels .

Using 308 std ammo , it reduced the signuture by 32 dB ( A ) , & with subsonic by 34 dB ( A ) , same for 300WM , but peak sound held longer .
However the US Army decided that a 20 dB reduction was all they needed, so then the push was for only modest suppression in a smaller/lighter package than the M89 can .
In the early 90s , AWC brought out the excellent Thundertrap suppressor , it 1.6 inches in dia by 8.5 inches long & weighed 0.8kg , and had a dB reduction of 27dB which is 5 dB louder  than the M89 .
With out the can on the 308 std Fed did 168 dB & 136 dB with can on .

In large cans , ie 338LM , I like the US made AAC Titan QD , its 1.85 dia by 10 inches long at only 20oz , grade 5 & 9 Ti , and as its a US product its not available outside the US .
And the Canadian PGW Timberwolf , again a Ti model .

the AAC , uses a monolithic core thats EDM wire cut out , and a tube thats got a series of small holes drilled , and these are plug welded .

Later  Chris
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #53 - Sep 8th, 2014 at 1:05am
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ChrisF wrote on Sep 8th, 2014 at 12:33am:
I think , that in NZ , we donot have a manufacturer that makes strong robust suppressors for rifles that will be shot alot , ie like the Mil/LEO do with some of their rifles .
In short , the sniper & assault rifle class.

My cans for my AIs , all come from oversea's makers , as I see nothing in NZ that is anything like them , from BT , AU & ATEC ( old model ) , in the main these are all steel , all SS or a mix of Aluminium & SS , all these cans are inteneded for alot of shooting & abuse .

If you look at the late 80s , the US Navy , put out a request , for a suppressor for 308/300WM rifles , where the cost & weight where not to be main factors , the main factor was maximum sound suppression .
McMillan made the rifles for them , M89 , they made the actions/barrels/cans & stocks etc , the rifles had a 17.5 inche long barrel that had polygonal rifling , the cans where large & long , 1.65 inches in dia & 17.24 inches long , out of 100%  304SS , weighed 1.66kg ( 58.5 ozs ) .
It telescopes back over tha barrel by 6.6 inches , and as such puts the last 6.6 inches of barrel in tension , it used 14 fluted cone baffels .

Using 308 std ammo , it reduced the signuture by 32 dB ( A ) , & with subsonic by 34 dB ( A ) , same for 300WM , but peak sound held longer .
However the US Army decided that a 20 dB reduction was all they needed, so then the push was for only modest suppression in a smaller/lighter package than the M89 can .
In the early 90s , AWC brought out the excellent Thundertrap suppressor , it 1.6 inches in dia by 8.5 inches long & weighed 0.8kg , and had a dB reduction of 27dB which is 5 dB louder  than the M89 .
With out the can on the 308 std Fed did 168 dB & 136 dB with can on .

In large cans , ie 338LM , I like the US made AAC Titan QD , its 1.85 dia by 10 inches long at only 20oz , grade 5 & 9 Ti , and as its a US product its not available outside the US .
And the Canadian PGW Timberwolf , again a Ti model .

the AAC , uses a monolithic core thats EDM wire cut out , and a tube thats got a series of small holes drilled , and these are plug welded .

Later  Chris


you would lose that bet Smiley
ODL make cans designed for Military and LEO use eg full auto fire in .308 they're Titanium. they would be able to make one up for larger calibres but you'd be looking at $800 + at a rough guess.
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #54 - Sep 8th, 2014 at 1:18am
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ARE they available NOW ?

No disrespect , but OD have just started making stuff , also the strengh of sintered Ti powder , is remoured to be at the same strengh as a cast product , cast are not as strong as forged or solid metal .

Later  Chris
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #55 - Sep 8th, 2014 at 2:32am
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ChrisF wrote on Sep 8th, 2014 at 1:18am:
ARE they available NOW ?

No disrespect , but OD have just started making stuff , also the strengh of sintered Ti powder , is remoured to be at the same strengh as a cast product , cast are not as strong as forged or solid metal .

Later  Chris


The start of manufacturing is of no relevance to whether a product may or may not work.  Availability is an issue but that should be rectified over time.  Proving product durability should also occur over time, but the proving process only reflects reality, it doesn't change the physical attributes of a product.

If you are going to critique material strengths, you should at least do so appropriately.  Sintered Ti power may well produce a stronger result than solid Aluminium for example.  It is not sufficient to infer that a sintered product may not be as strong as all other forms of solid metal.

Your point probably is made on the basis that the designs are new and at this point we cannot know about long term durability, which is fair.  From what I have seen the work appears promising, and may well offer considerable advantage over traditionally manufactured options... we will have to wait and see....

  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #56 - Sep 8th, 2014 at 3:59am
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sidney wrote on Sep 8th, 2014 at 2:32am:
ChrisF wrote on Sep 8th, 2014 at 1:18am:
ARE they available NOW ?

No disrespect , but OD have just started making stuff , also the strengh of sintered Ti powder , is remoured to be at the same strengh as a cast product , cast are not as strong as forged or solid metal .

Later  Chris


The start of manufacturing is of no relevance to whether a product may or may not work.  Availability is an issue but that should be rectified over time.  Proving product durability should also occur over time, but the proving process only reflects reality, it doesn't change the physical attributes of a product.

If you are going to critique material strengths, you should at least do so appropriately.  Sintered Ti power may well produce a stronger result than solid Aluminium for example.  It is not sufficient to infer that a sintered product may not be as strong as all other forms of solid metal.

Your point probably is made on the basis that the designs are new and at this point we cannot know about long term durability, which is fair.  From what I have seen the work appears promising, and may well offer considerable advantage over traditionally manufactured options... we will have to wait and see....



I'll second that. I have an ODL unit on my AR and it's well suited to that application. The units are heat treated prior to finish which must increase tensile strength to some degree.
ODL will be the only one who's can shed some fact's based on actual use of this material method.
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #57 - Sep 8th, 2014 at 5:10am
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Mathias wrote on Sep 8th, 2014 at 3:59am:
sidney wrote on Sep 8th, 2014 at 2:32am:
ChrisF wrote on Sep 8th, 2014 at 1:18am:
ARE they available NOW ?

No disrespect , but OD have just started making stuff , also the strengh of sintered Ti powder , is remoured to be at the same strengh as a cast product , cast are not as strong as forged or solid metal .

Later  Chris


The start of manufacturing is of no relevance to whether a product may or may not work.  Availability is an issue but that should be rectified over time.  Proving product durability should also occur over time, but the proving process only reflects reality, it doesn't change the physical attributes of a product.

If you are going to critique material strengths, you should at least do so appropriately.  Sintered Ti power may well produce a stronger result than solid Aluminium for example.  It is not sufficient to infer that a sintered product may not be as strong as all other forms of solid metal.

Your point probably is made on the basis that the designs are new and at this point we cannot know about long term durability, which is fair.  From what I have seen the work appears promising, and may well offer considerable advantage over traditionally manufactured options... we will have to wait and see....



I'll second that. I have an ODL unit on my AR and it's well suited to that application. The units are heat treated prior to finish which must increase tensile strength to some degree.
ODL will be the only one who's can shed some fact's based on actual use of this material method.


Chris No disrespect taken Smiley
as for is it available NOW well you can get it made here where similar suppressors are a prohibited export not to mention twice the price. Smiley
ODL i wouldnt describe as just started making stuff he's been making cans this way for 2 years and selling them for the past 18 months constantly improving them since he aquired the metering equipment to test them properly.
the Ti6Al4V Grade 5 alloy used to make the ODL cans is also used for aircraft frames and engine components, http://asm.matweb.com/search/SpecificMaterial.asp?bassnum=MTP641
the alloy doesn't change anything as once its all printed / welded together it is then heat treated as a whole so structurally wont be different than if it was machined from a billet.

to each their own but if they withstand being subjected to full automatic fire without failing then i wouldn't be worried about what an individual semi could do to it.




  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #58 - Sep 8th, 2014 at 5:29am
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ChrisF wrote on Sep 8th, 2014 at 12:33am:
I think , that in NZ , we donot have a manufacturer that makes strong robust suppressors for rifles that will be shot alot , ie like the Mil/LEO do with some of their rifles .
In short , the sniper & assault rifle class.

My cans for my AIs , all come from oversea's makers , as I see nothing in NZ that is anything like them , from BT , AU & ATEC ( old model ) , in the main these are all steel , all SS or a mix of Aluminium & SS , all these cans are inteneded for alot of shooting & abuse .

If you look at the late 80s , the US Navy , put out a request , for a suppressor for 308/300WM rifles , where the cost & weight where not to be main factors , the main factor was maximum sound suppression .
McMillan made the rifles for them , M89 , they made the actions/barrels/cans & stocks etc , the rifles had a 17.5 inche long barrel that had polygonal rifling , the cans where large & long , 1.65 inches in dia & 17.24 inches long , out of 100%  304SS , weighed 1.66kg ( 58.5 ozs ) .
It telescopes back over tha barrel by 6.6 inches , and as such puts the last 6.6 inches of barrel in tension , it used 14 fluted cone baffels .

Using 308 std ammo , it reduced the signuture by 32 dB ( A ) , & with subsonic by 34 dB ( A ) , same for 300WM , but peak sound held longer .
However the US Army decided that a 20 dB reduction was all they needed, so then the push was for only modest suppression in a smaller/lighter package than the M89 can .
In the early 90s , AWC brought out the excellent Thundertrap suppressor , it 1.6 inches in dia by 8.5 inches long & weighed 0.8kg , and had a dB reduction of 27dB which is 5 dB louder  than the M89 .
With out the can on the 308 std Fed did 168 dB & 136 dB with can on .

In large cans , ie 338LM , I like the US made AAC Titan QD , its 1.85 dia by 10 inches long at only 20oz , grade 5 & 9 Ti , and as its a US product its not available outside the US .
And the Canadian PGW Timberwolf , again a Ti model .

the AAC , uses a monolithic core thats EDM wire cut out , and a tube thats got a series of small holes drilled , and these are plug welded .

Later  Chris



MAE make good strong suppressors did you forget about them ??
  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #59 - Sep 8th, 2014 at 5:59am
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New OD products look good , all I know of Ti is its available in quite a wide range of grades , at the lower end only good for pistol cals , & the high end is suitable for rifle cals , the low grade is very cheap , high grade dear .

maybe a engineer can say what the actual strengh of printed Ti is ?

  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #60 - Sep 8th, 2014 at 7:39am
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No , I have not forgotten about MAE , I think for the money you cannot beat them , $230 for my muzzle 308 SS MAE( 100% SS )I have 2 308 ones and 1 22mag ( for a 22 hornet ) .
They are 1/4 of the price of say a BT can , the BT can is twice the weight & has better sound reduction , so different niches .
I do wish MAE would maybe make a version that mounts onto a brake , like AAC , & put a few more baffles in the muzzle forward cans , even if thats going to make the can a wee bit longer .

Looking at a least a few more MAE cans soon.

Later  Chris

  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #61 - Sep 8th, 2014 at 8:10am
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Hi ODL ,

Have you any pics that you can release on the 308 QD cans that go over a brake ?
I may have to buy one .

Later  Chris
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #62 - Sep 10th, 2014 at 5:01am
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I will get a video of the QD prototype cleaned up and post a link as soon as I have it.

Regarding the materials and manufacturing methodology:  The material used is 90% titanium, 6% aluminium and 4% vanadium also known as Ti-6-4 Grade 5 Titanium. The method is actually Selective Laser Melting although it was originally called "Laser Sintering".  Having been exposed to sintered materials in the 80's, I almost gave this technology a pass as the old sintering created a type of cast part. 

The way parts are created now is far different and has no resemblance to the old sintered methods at all.  The as built strength from the plate is around 1000 UTS and 900 yield.  After parts are tapped and any hand clean up, they go back into the oven for stress relief, heat treat and nitriding.  At that point, the UTS is around 1200 MPA and yield is around 1000 MPA.  The nitriding also provides a hard surface both inside and out that ranges from 62 Rock C at the surface gradually dropping to 36 Rock C by 28 microns deep.  This is advantageous for baffle longevity.

This method of manufacture provides the only true solid suppressor construction since all the material is fused to the entire structure in one monolithic part.  This allows for thinning out some areas and thickening others as needed locally.  Many manufacturers emulate this by fully welding the baffle stack together and then welding the ends on.

Most of our cans are designed for semi auto fire.  The can I sent to Canada for sound testing was also tested using burst fire for 200 rounds.  I have the can on my desk and the finish still looks new!  It did get some erosion since the blast plate was too far aft for FA but I was not aware this test would be run although it is handy that it was.

I have one can that is built for limited full auto and is currently being tested by an overseas group.  The testing regime is 1000 rounds while testing for POA - POI shift with 3 removals and re installs, group deviation with and without suppressor, normal fire and three times in the test a rapid fire stress test is performed with 20 rounds fast semi followed by 20 rounds burst followed by 30 rounds full auto.  The can is very hot at this stage. 

This is the SBR can that is out of stock on our site.  It is available for special order or if it is popular enough I will stock them.  I made one up in 15-5PH stainless as well but the titanium model was preferred by the testing group.
  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #63 - Sep 10th, 2014 at 5:20am
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ChrisF wrote on Sep 8th, 2014 at 12:33am:
If you look at the late 80s , the US Navy , put out a request , for a suppressor for 308/300WM rifles , where the cost & weight where not to be main factors , the main factor was maximum sound suppression ...

the cans where large & long , 1.65 inches in dia & 17.24 inches long , out of 100%  304SS , weighed 1.66kg ( 58.5 ozs ) .

Using 308 std ammo , it reduced the signuture by 32 dB ( A ) , & with subsonic by 34 dB ( A ) , same for 300WM , but peak sound held longer .


Bean counters put out RFP's where weight and size is not an issue but real people have to hump that gear all around creation.  Today, there are many cans that are doing as well as that custom built monstrosity that weighs a kilo and a half that are half the length and weight.

I plan on getting a bolt can down to the mid 130's with standard ammo and will try my best to get a decent size AR10 can to 138 at the muzzle and ear with a 20" barrel.  Should know next week.
  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #64 - Sep 29th, 2014 at 8:46am
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went out wobbly shooting this weekend. fired 30-40 shots from 7.62x39mm and mate fired 30ish from .308 mine has a spartan on it and his is also a gunworks overbarrel..looks similar but has fatter mid section and more knurling. both sounded about the same and sure were pleasing to be around..no more ringing ears and shooting close to each other but at different heights on a ridge knob ment better area covered without deafening each other. didnt really realise just how good this would be but sure are stoked now.
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #65 - Sep 30th, 2014 at 9:32am
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I have 2 rifles Browning a bolts in 270 available at the moment. Mine has an original highcountry sport suppressor over barrel which I bought in 2002. Weighs 750grams!! Is very quiet and reduces a ton of recoil. The other rifle has a hardy like the one shown in this forum. It is way lighter but noticeably louder than the highcountry sport one. Sonic also do a suppressor similar to the DPT. Have put one on my AR and are very light and compact.
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #66 - Dec 6th, 2014 at 1:09am
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The other thing to consider when using a suppressor is using subsonic rounds as this would help reduce the noise even more.  I am looking at putting a suppressor on my 308 but none of the info on here so far is helping me decide which one to get.
I had been told ZIGGLIANI suppressors are the way forward.  Does anybody have one and can tell me how they perform Smiley
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #67 - Dec 6th, 2014 at 1:43am
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Prtnd Huntr wrote on Dec 6th, 2014 at 1:09am:
The other thing to consider when using a suppressor is using subsonic rounds as this would help reduce the noise even more.  I am looking at putting a suppressor on my 308 but none of the info on here so far is helping me decide which one to get.
I had been told ZIGGLIANI suppressors are the way forward.  Does anybody have one and can tell me how they perform Smiley

Ah, the High Country Sport mentioned in the posting b4 your's is a Zigliani.  Smiley

http://hcssuppressors.com/
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #68 - Dec 6th, 2014 at 2:57am
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Prtnd Huntr wrote on Dec 6th, 2014 at 1:09am:
The other thing to consider when using a suppressor is using subsonic rounds as this would help reduce the noise even more.  I am looking at putting a suppressor on my 308 but none of the info on here so far is helping me decide which one to get.
I had been told ZIGGLIANI suppressors are the way forward.  Does anybody have one and can tell me how they perform Smiley

using GW spartan a subsonic round from 7.62x39mm is quieter...or seems to be than .22 through moderator......twice Ive shot rabbit at 10-15 yards and its mate hasnt moved till I tried to operate bolt to reload. Wink
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #69 - Dec 6th, 2014 at 7:52pm
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My son nailed a nice fat yearling freehand in the beech late yesterday avo @ 90m . Still had the bipod on but had no complaints about the Tok Can for balance.Right thru base of neck. So we got all the meat.
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #70 - Dec 7th, 2014 at 10:06pm
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Aw... got all excited these fore a minute when I read you were aiming to get a bolt gun suppressor down to 130... but I think you mean the sound signature down to 130 db... I want the weight down to 130g!
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #71 - Dec 9th, 2014 at 4:31pm
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NZVarminter wrote on Dec 7th, 2014 at 10:06pm:
Aw... got all excited these fore a minute when I read you were aiming to get a bolt gun suppressor down to 130... but I think you mean the sound signature down to 130 db... I want the weight down to 130g!


Down to $130 would be nice too, can but only dream
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #72 - Dec 24th, 2014 at 6:45am
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which one would have the most recoil reduction? I currently have a mae muzzle forward can, I would prefer a overbarrel but would these offer more performace then the mae can I have?
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #73 - Dec 24th, 2014 at 8:06pm
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We nailed a fat stag late last nite with our Tok Can. The first shot took a whisker of fur off the top of the neck. The stag put his head up wondering what the commotion was and then got one just a smidgen lower. Sure the lack of noise was a great advantage.Lovely seeing all the action via Swaro EL's.
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #74 - Jun 22nd, 2015 at 8:25am
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bump...cant find the one with link to testing?????
anyone????
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #75 - Jun 22nd, 2015 at 8:32am
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Troll attack!
Go LOUD ! 😈


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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #76 - Jun 22nd, 2015 at 8:33am
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well go and do some reloading then!!!!!! Wink
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #77 - Jul 12th, 2018 at 7:19pm
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Rather than start a new thread I thought I just post a link to this.

May have been mentioned before.

http://www.rodandrifle.co.nz/supressor-test.html

Little more science behind this one and a lot of cans tested.

  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #78 - Jul 12th, 2018 at 7:24pm
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6x45 wrote on Jul 12th, 2018 at 7:19pm:
Rather than start a new thread I thought I just post a link to this.

May have been mentioned before.

http://www.rodandrifle.co.nz/supressor-test.html

Little more science behind this one and a lot of cans tested.



FWIW, rightly or wrongly, as impartial as it was, it was, it conducted in Hardys chamber
  

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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #79 - Jul 12th, 2018 at 9:36pm
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There are 2 cans going up the Coast tomorrow night. 1 a Dan Can mod 4 and 1 DPT with extra baffle and also SS baffle on muzzle. Both respectively work well on their rifles.Muggins is taking his mate Maxi and ,sharper knife and I Phone 8 for bragging rights.Dont think the crew will worry about the finer points of suppressors as long as the stags go down.So long as the debate is constructive . Wink
  
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Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #80 - Jul 17th, 2018 at 4:27pm
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Cool
  

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