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Speed lock firing pin assemblies

 
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  #15  
Old 07-19-2008, 02:20 AM
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This brings up a good point and another reason why I don't care for these things much.

Chances are, the parts are made to spec. Mass produced actions experience a variance in tolerances. We know this. Maybe the drill went a touch deep on your bolt or maybe the shoulder on the pin is a hair back, or maybe both and you have a tolerance stack.

My question now is how many of these are floating around out there that were just dropped in and ran on the assumption everything is right? Too much striker protrusion and you start piercing primers with any kind of aggressive load. Too little and the gun suddenly develops elevation stringing because the primer strikes are causing weak and inconsistent ignition. Acts much like a bad spring.

Grrrrrr.

Avoid IMO.
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  #16  
Old 07-19-2008, 01:03 PM
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Another good post and a lot of discussion and opinions.

I do use them but not on all rifles.

Like anything to do with gunsmithing if they are not properly installed
or not to spec they can cause problems. Some times the factory bolt
may not be perfict as Chad pointed out and "MUST" be properly installed
or problems may occur.

The only time I recommend thier use is on very light rifles where movement
after the trigger is pulled is most likley,on heavy rifles this is not a problem
unless the shooter has a bad case of target panic and nothing will cure this
but lots of practice.

Also as stated some bolt shrouds move with the fireing pin and may not allow
much improvement in lock time. So it would probably not be an improvement.

Improving lock time is best suited to hunters/shooters with very little experience
in position,follow through and shooting skills, Light weight rifles and bolt guns that
only the sear moves with the pin.

If I can improve a .300" group to .250" by using a light weight fireing pin I WILL
.050" Doesent sound like much at 100yrds but at 1000 yrds it is.

They are definitely not the magic bullet but they can improve an already good
shooting rifle .( IF INSTALLED PROPERLY ).

Just my 2 cents
J E CUSTOM
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  #17  
Old 07-19-2008, 11:31 PM
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J E, what's your take on my speedlock firing pin protruding like this?



I'd say in retrospect that I could have just as well not ordered this for some of the reasons you mentioned. I have a fairly heavy rifle and don't flinch much. Oh well.
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  #18  
Old 07-20-2008, 01:25 AM
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jonoMT

I would definitely send it back for a new one, and if it came back
the same then I would assume the bolt was drilled to deep and fitted
with a shorter firing pin .

A while back a poster had a PTG bolt that was not drilled deep enough,
The point is everything that goes into a fire arm should be checked and
installed properly before firing it.

During assembly factorys have parts of different dimensions so all
they have to do is change a part if it is not correct with out having
to discard or re'machine a major part.

Sorry you have a problem with one of them ,I never have but there is
allways a first time.

I have seen this many times on recoil lugs (they were different thicknesses
but headspace was correct.)

J E CUSTOM
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  #19  
Old 07-20-2008, 12:43 PM
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deleted.......

Last edited by jmason; 07-23-2008 at 08:21 PM. Reason: useless to topic
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  #20  
Old 07-23-2008, 08:18 PM
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Location: Wampum, PA
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Let me ask you guys another question. How do the custom firing pin assemblies compare to the one I purchased or plain old OEM equipment? I mean when you buy it complete firing pin, spring, shroud, ect. one drop in unit not just the spring and or pin. When you buy a complete unit is there still the chance of the pin protruding too far like the one pictured in a n earlier post? Are the pins the same weight as a stock pin? Are the springs exerting the same sprung weight?

There's got to be a differance between the ones in custom guns compared to a standard rifle bought at a sporting goods store, and the one I have. How do all 3 compare?

Ok, OK I'll stop with all the questions..............for now anyway.........
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  #21  
Old 07-24-2008, 05:00 AM
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Join Date: Jan 2007
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Again, the determining factor on pin protrusion is the depth of the hole in the bolt and the location of the shoulder on the striker in relation to the tip. The rest of the components are just along for the ride.
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