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Normal Topic Problem: Loose rings and mounts or loose shooting (Read 4848 times)
west_coast_hunta
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Problem: Loose rings and mounts or loose shooting
Jun 27th, 2009 at 3:55pm
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Howdy
On my recent tahr hunting trip I did some miserable shooting, missing lots of easyish shots 250++ yards.  I had rangefinder and charts etc and have practiced at 450 yards with good results on targets soo...
Before I went out to the range today I loosened my weaver rings that were already slightly loose and realigned my slightly non horizontal crosshairs then retightend.  I also tightened up the bases which were slightly loose.  I then went out to the range and first shot missed the box at around 85 yards.  I bore sighted it and got it shooting bang on again.
I didnt think my tilting scope back into horizontal would have put it off that bad.
Do you think that slightly loose rings and bases would make a big impact on accuracy?  Obviously really loose ones would but they required maybe a full rotation on each max.  And also if loosing then tightening rings enough to allow a small twist could make that difference (maybe with weaver rings cos they pull sideways?)
Look forward to your opinions
WCH
  
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Re: Problem: Loose rings and mounts or loose shooting
Reply #1 - Jun 27th, 2009 at 4:10pm
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Anything that causes the scope to be misaligned or move when the rifle is fired will cause significant grief.  Speaking from experience if you have any sort of movement that you can't eliminate permanently dump the rings and start again with the best quality rings you can afford.  I found the Leupold PRW rings to be excellent but YMMV.
Its not smart to skimp on these things as you have learned!
  
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west_coast_hunta
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Re: Problem: Loose rings and mounts or loose shooting
Reply #2 - Jun 27th, 2009 at 4:17pm
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Ok i think the rings and bases are fine but were either too loose or need some lock tight applied maybe. I never no how tight is too tight. I just do it firm or as tight before it feels like its going to shit itself Smiley
  
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irgnz
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Re: Problem: Loose rings and mounts or loose shooting
Reply #3 - Jun 27th, 2009 at 4:26pm
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Tight as the little Allen keys will allow before shearing in 2 or rounding off at the end.
Was informed that with the rings now days you shouldn't need loctight as it is all about thred stretch. Too tight is a cross thread or buggard screw head.
As said, any movement is bad. A lose base can move sideways 1/2mm, which in turn means 200-300mm at 300m. The triangle gets bigger as you increase the range. So keep them as tight as posible.
  

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BC
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Re: Problem: Loose rings and mounts or loose shooting
Reply #4 - Jun 27th, 2009 at 4:41pm
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I put a dab of clear nail varnish on the lip between the ring and the scope tube so that I can see if it ever moves. The  polish will crack.
bc
  
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Re: Problem: Loose rings and mounts or loose shooting
Reply #5 - Jun 27th, 2009 at 5:35pm
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Yep had that problem at the long range shoot up here. Roll Eyes Embarrassed turns out loose rings and every time I adjusted for range I would get inconsistant results.
  

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Re: Problem: Loose rings and mounts or loose shooting
Reply #6 - Jun 27th, 2009 at 5:44pm
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Quote:
I put a dab of clear nail varnish on the lip between the ring and the scope tube so that I can see if it ever moves. The  polish will crack.
bc


+ 1  on that Bruce,,loose rings miss things  Smileyanother choice if in doubt, run a strip or two of insulation tape around the scope tube then shove the rings on.
  

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west_coast_hunta
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Re: Problem: Loose rings and mounts or loose shooting
Reply #7 - Jun 27th, 2009 at 5:56pm
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All good info. Cheers guys. Looks like i can blame that as opposed to my shooting Wink
  
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Nobbert
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Re: Problem: Loose rings and mounts or loose shooting
Reply #8 - Jun 27th, 2009 at 9:15pm
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Don't forget the epoxy lads ! I wouldn't dream of putting bases on a rifle without using a serious two part resin (Not Araldite !!) for considerably increased strength/rigidity. And don't use loctite under the bases either, even one with supposed gap filling properties. And make sure to degrease first to ensure a proper bond. Amen.
  
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Re: Problem: Loose rings and mounts or loose shooting
Reply #9 - Jun 27th, 2009 at 9:43pm
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west_coast_hunta wrote on Jun 27th, 2009 at 5:56pm:
All good info. Cheers guys. Looks like i can blame that as opposed to my shooting Wink


  Grin never blame your shooter,,,it's the nut behind the bolt that may just need a little tightening,,from time ti time Roll Eyes Wink
  

Wrinkles are the map of your soulful journey,,,you'd be lost without them,,
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west_coast_hunta
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Re: Problem: Loose rings and mounts or loose shooting
Reply #10 - Jun 28th, 2009 at 4:00pm
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Haha yeah my stupid fault for not checking it was all good before i went out.
  
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Re: Problem: Loose rings and mounts or loose shooting
Reply #11 - Jun 28th, 2009 at 5:51pm
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west_coast_hunta wrote on Jun 28th, 2009 at 4:00pm:
Haha yeah my stupid fault for not checking it was all good before i went out.


Been there done that,,yi not alone Smiley
  

Wrinkles are the map of your soulful journey,,,you'd be lost without them,,
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BC
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Re: Problem: Loose rings and mounts or loose shooting
Reply #12 - Jun 28th, 2009 at 5:57pm
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I've found the Weaver Quad mounts good. They are only alloy and very light, but if a screw does come loose (or even 2) it doesn't completely compromise the grip that the rings have on the scope.
  
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Nobbert
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Re: Problem: Loose rings and mounts or loose shooting
Reply #13 - Jun 28th, 2009 at 6:04pm
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But lads what am I missing here .... I had my first rifle in 1973 and a couple since and I don't remember a screw ever coming loose in the intervening years. Enlighten me please about what NOT TO DO, that causes this to  happen.
  
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Re: Problem: Loose rings and mounts or loose shooting
Reply #14 - Jun 28th, 2009 at 6:33pm
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But lads what am I missing here .... I had my first rifle in 1973 and a couple since and I don't remember a screw ever coming loose in the intervening years. Enlighten me please about what NOT TO DO, that causes this to  happen.  

Don't play with whats not broke.. Grin Grin
  

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Re: Problem: Loose rings and mounts or loose shooting
Reply #15 - Jun 28th, 2009 at 6:57pm
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As you do the final tightening turn on the screw give the screwdriver a sharp tap with a hammer , this sets the screw in tight . If you use epoxy one day it will cost you when you break off a screw and a gunsmith has to do some work . I have used flexiable rod varnish as a locker sealer where needed for years  , it isnt a tough as lock tite but holds well without cracking .
Bushnell used to put a little advisory note with their scopes saying 1 thou at the scope was 1" of movement at 100 yards , I am not up on the maths but it dosent take much Shocked movement at the scope to turn into a miss
  

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Re: Problem: Loose rings and mounts or loose shooting
Reply #16 - Jun 28th, 2009 at 7:07pm
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Hello Nobbert,

From memory, scope related things that have needed some tinkering from yours truly. I may have sloppy friends, but here it goes:

A list of NOT TO DOīs

Donīt buy a gun without checking the complete scope mount.
Donīt assume that the mount can handle excessive abuse.
Donīt take for granted that bases are bored linear in action.
Donīt mount a scope without lapping the rings (there are exceptions)
Donīt buy rings/bases "cheaper" than Weaver.
Donīt overtighten screws.
Donīt forget to use LocTite, resins or other gripping media.
Donīt assume that all rings are 1" or 30 mm.

Gerry Atric


  
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Nobbert
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Re: Problem: Loose rings and mounts or loose shooting
Reply #17 - Jun 28th, 2009 at 7:42pm
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Hmmmmmmmm lads ....... u can use epoxy under the bases (to not use it is your first mistake) without getting it on the screw threads. And never use a loctite ( none of the numerous types) under the bases as epoxy will leave it for dead in that application. But ultimately it's all about experience and a proper knowledge of these resins and how to use them. I bet the likes of Greg Duley gets it right every time he mounts a scope. Or Tracey Short. Lapping the rings is basic stuff. And scrape/file any sharp edges off when you're done lapping as otherwise u will have sharp edges that will mark the scope.
  
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