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Old January 19, 2013, 04:30 AM   #16
1911Tuner
Senior Member
 
Join Date: May 17, 2004
Location: NC Piedmont/Foothills
Posts: 605
Jim's assessment is pretty much spot on. I've seen it happen with GI ball and equivalent handloads, and the common thread almost always includes a weak or short firing pin spring.

I've staked the edges of firing pin stops as an expedient measure, but prefer a fitted stop. No need to make it so tight that it requires a punch and hammer to move it, though. Just enough to keep it from falling from gravity is all that's needed, and using a punch or the tip of the hammer strut to pull it down is acceptable.

The side benefit of using a fitted stop is that it makes for more consistent ejection by keeping the extractor aligned.
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