Montana Rifle Co, Shoot2Hunt, and Rokslide Rifle

DavidReed

FNG
Joined
Dec 20, 2019
Messages
33
We proof test all guns, measure cocking piece travel during safety engagement, firing pin protrusion, set/measure trigger weight, coating mil thickness measured... ect. The design has been tested to and exceeds SAAMI/ANSI Z299.5 Abusive Mishandling Standards. We've done test firing at sub zero temps, and one test rifle ate 5 boxes of proof rounds with no measurable distortion when I broke it down. I've done intentional case head blowouts to ensure the action handles gas properly and protects the shooter. Some day, in my free time, I'm going to intentionally squib a barrel and try to blow an action up while filming with our high speed camera. If it still doesn't blow, I'll load some some rounds up with flash powder and just detonate it.
@Imac45acp

Are you measuring cocking piece travel as a matter of design tolerance, i.e. it meets spec, or ar you measuring if the cocking piece consistency has the same amount of travel through the three safety positions and after the firing pin is released to fire the gun and through the action of cocking the fire control mechanism?
 

4th_point

WKR
Joined
Jun 14, 2022
Messages
701
1) Yes, sort of on the collar. The interior barrel collar is abbreviated by both bolt raceways as opposed to just the extractor side lug. The first step of our receiver machining is punching a hole through Ø2" bar and broaching the bolt bore/raceways clear through. This gives us datums to index and fixture on for all remaining machining process. The shroud and bolt stop act in conjunction to block any gasses from injuring the shooter in the event of a catastrophic case failure.

Thanks, Ian.

A so-called H-collar, instead of a C-collar.
 
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