Fishnhunt New Zealands main hunting and Fishing Forum. millions of posts on fishing and hunting, dogs, 4x4 vehicles, outdoors and much more Welcome, Guest. Please Login or Register
Page Index Toggle Pages: 1 2 [3] 4 5 6 Send TopicPrint
Hot Topic (More than 30 Replies) DPT vs Hardy vs Gunworks Suppressor Review (Read 3504 times)
Jimmy_
Forum Senior
****
Offline



Posts: 981
Location: Kaukapakapa
Joined: Mar 29th, 2010
Gender: Male
Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #30 - Jul 18th, 2014 at 3:41am
Print Post  
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.
  
Back to top
 
IP Logged
 
sako
Forum Font
*****
Offline


I Love The FishNhunt Forum

Posts: 4084
Location: napier
Joined: Jan 31st, 2008
Gender: Male
Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #31 - Jul 18th, 2014 at 10:21pm
Print Post  
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.
  
Back to top
 
IP Logged
 
Ruger
Donor Member
*****
Offline


I Love The FishNhunt Forum

Posts: 193
Location: Palmerston North
Joined: Nov 9th, 2006
Gender: Male
Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #32 - Jul 19th, 2014 at 8:23pm
Print Post  
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
  

Cheers&&Ruger
Back to top
 
IP Logged
 
Brakelie
Full Member
***
Offline



Posts: 153
Location: NZ
Joined: Aug 16th, 2013
Gender: Male
Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #33 - Jul 20th, 2014 at 3:28am
Print Post  
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?
  
Back to top
 
IP Logged
 
foxhound
Active Member
**
Offline


I Love The FishNhunt Forum

Posts: 79
Location: northland
Joined: Nov 11th, 2012
Gender: Male
Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #34 - Jul 20th, 2014 at 4:26am
Print Post  
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.
  
Back to top
 
IP Logged
 
sako
Forum Font
*****
Offline


I Love The FishNhunt Forum

Posts: 4084
Location: napier
Joined: Jan 31st, 2008
Gender: Male
Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #35 - Jul 21st, 2014 at 7:33am
Print Post  
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.
  
Back to top
 
IP Logged
 
ODL
Just Joined
*
Offline


Speak softly from a bangstick

Posts: 19
Joined: Jun 12th, 2013
Gender: Male
Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #36 - Aug 9th, 2014 at 2:33am
Print Post  
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.
  

Oceania-Defence.com
Back to top
WWW  
IP Logged
 
CatSlayer
Full Member
***
Offline


6.5mm addiction

Posts: 161
Joined: Feb 24th, 2007
Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #37 - Aug 9th, 2014 at 8:55am
Print Post  
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
  

Sakohaulic anonymous
Back to top
 
IP Logged
 
sako
Forum Font
*****
Offline


I Love The FishNhunt Forum

Posts: 4084
Location: napier
Joined: Jan 31st, 2008
Gender: Male
Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #38 - Aug 9th, 2014 at 9:41am
Print Post  
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.
  
Back to top
 
IP Logged
 
Brakelie
Full Member
***
Offline



Posts: 153
Location: NZ
Joined: Aug 16th, 2013
Gender: Male
Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #39 - Aug 9th, 2014 at 10:46am
Print Post  
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.
  
Back to top
 
IP Logged
 
mauser308
Donor Member
*****
Offline



Posts: 1181
Joined: May 15th, 2011
Gender: Male
Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #40 - Aug 9th, 2014 at 9:44pm
Print Post  
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...
  
Back to top
 
IP Logged
 
stewey1
Donor Member
*****
Offline



Posts: 198
Location: queenstown
Joined: Nov 23rd, 2010
Gender: Male
Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #41 - Aug 10th, 2014 at 5:37am
Print Post  
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.

  
Back to top
 
IP Logged
 
ODL
Just Joined
*
Offline


Speak softly from a bangstick

Posts: 19
Joined: Jun 12th, 2013
Gender: Male
Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #42 - Aug 10th, 2014 at 5:50am
Print Post  
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.
  

Oceania-Defence.com
Back to top
WWW  
IP Logged
 
6.5x55bjai
Ex Member


Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #43 - Aug 10th, 2014 at 5:58am
Print Post  
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.
  
Back to top
 
IP Logged
 
ODL
Just Joined
*
Offline


Speak softly from a bangstick

Posts: 19
Joined: Jun 12th, 2013
Gender: Male
Re: DPT vs Hardy vs Gunworks Suppressor Review
Reply #44 - Aug 10th, 2014 at 6:58am
Print Post  
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.
  

Oceania-Defence.com
Back to top
WWW  
IP Logged
 
Page Index Toggle Pages: 1 2 [3] 4 5 6
Send TopicPrint
 

FishnHunt - New Zealands Famous Hunting and Fishing Forum Since 1995 » Powered by YaBB 2.6.11!
YaBB Forum Software © 2000-2018. All Rights Reserved.
Site Design By Alan Simmons - PRism and all rights are reserved from 1995 and onwards