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Gunsmithing FP Snapped While Dry-firing UPDATE

19Scout77

Gunny Sergeant
Full Member
Minuteman
Jun 9, 2007
4,013
621
GA
I've been fry-firing alot during the snowed in month--and suffered the following today, which occurred while racking the bolt. Remington 700, 7wsm---aftermarket FP and shroud. Actual rd count of 274. Any ideas?

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Re: FP Snapped While Dry-firing

That is rather odd at only 200 and change rounds.... dry fire in striker type systems is "supposed" to be safe for the firing pin. could just be poor metallurgy in the aftermarket pin.

Has anyone else ever actually seen this happen from dry firing before. with or without snap caps?

Cheers
T
 
Re: FP Snapped While Dry-firing

As a guess. Bad metal & or heat treat, compounded by a stress riser where the pin becomes hollow. That, & I can't help but wonder if the pin might have been a touch out of spec length wise, & the result of said mis-sizing became apparent on shot #275. Kind of late for measuring at this point, but just another thought towards contributing factors.

It'd be interesting to see what the rest of the hollow bit looks like sans bluing, & after some dye penetrant was applied. Assuming the manufacturer wants the broken bits back in their current state. IE: with the OEM finish still on them.

Might be worth doing on the non blued bits, dye penetrant that is. And or putting said pieces under some magnification. Dare we ask what make of pin it was? And stock spring or aftermarket?
 
Re: FP Snapped While Dry-firing

Had two tips break off of an aftermarket pin within a couple hundred rounds in the same rifle. Went back to the original Rem pin and it has been fine.

I doubt there are any problems with the rifle itself. Get a new pin and keep your receipt.
 
Re: FP Snapped While Dry-firing

Got a late night call back from the manufacturer about 5 minutes ago. Has seen the EXACT same thing 3 times before. Already sent one to metalurgist---has to do with greater forces exerted when you do not have a primer to cushion the FP deceleration. Only happens from dry-firing and related work hardening. Its a little beyond me, but it made sense.

Bottom line, send the assembly in, they'll swap evrything out and send a new one.

Further was suggested that if I want the faster lock time but still want to dry-fire that I keep a stock assembly for dry-firing and swap it out with the high end one for actual shooting.
 
Re: FP Snapped While Dry-firing

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: AJ Brown</div><div class="ubbcode-body">Put the stock assembly back in and use a snap cap to dry fire.

Alan </div></div>

Will do. See Alan, this is my one rifle that you did not build and look what happens!
 
Re: FP Snapped While Dry-firing

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 19Scout77</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: AJ Brown</div><div class="ubbcode-body">Put the stock assembly back in and use a snap cap to dry fire.

Alan </div></div>

Will do. See Alan, this is my one rifle that you did not build and look what happens! </div></div>

You may learn yet.

Alan
 
Re: FP Snapped While Dry-firing

Better now aiming out the kitchen window at home than halfway through the first day of a match, after an 8 hr drive!!
 
Re: FP Snapped While Dry-firing

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 19Scout77</div><div class="ubbcode-body">Better now aiming out the kitchen window at home than halfway through the first day of a match, after an 8 hr drive!!

</div></div>

You may want to check for a faulty Trigger Actuator......


I hear there are a lot of those going bad these days...lol
Good talking with you today.

Mark
 
Re: FP Snapped While Dry-firing

Mark-- I guarantee that part is inherently flawed! Thanks for the assist, it was a pleasure chating with you.

Hey MAGUA! How's life on the other side of the water? When are you heading up to CR?

E-
 
Re: FP Snapped While Dry-firing UPDATE

UPDATE!!

I sent the bolt off to DANS40x in Alaska to rebuild the FP, and while he was at it, relocate and tig-weld the handle, harden the extractor cam surface, and put the Badger knob on the right way (also using the tig welder), and all I can say is WOW! Flawless thoughtful planning and execution by Dan. I cannot speak highly enough of the quality of his work and the efficiency in with which it was completed. This bolt is now as bulletproof as I can get it!

More props go to Mark Gordon (US Handgunner) who was kind enough to do a rush job and re-cerakote the bolt. Again, flawless execution and a 24 hour turnaround.

DO NOT HESITATE TO DEAL WITH EITHER OF THESE TWO GENTS!!!

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Re: FP Snapped While Dry-firing

Glad you got it worked out. As for Dan, his work might be top notch, but the same can not be said for the type of person that he is. He does not deserve a single customer from the hide. Its a shame people still send work to him.
 
Re: FP Snapped While Dry-firing

We can agree to disagree on that one. I can only go with what I have personally experienced and Dan went out of his way to help me at a time I truly needed help and did so with nothing to gain. That to me is the measure of a man.