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Old November 10, 2005, 09:11 AM   #3
Jim Watson
Senior Member
 
Join Date: October 25, 2001
Location: Alabama
Posts: 18,487
The gouge in the case is caused by the round striking the sharp edge of the chamber mouth. It doesn't matter how well the gun is "ramped and throated" if that edge is left sharp.

Bullet setback in the case is caused by striking a feed ramp that is rough or steep or the cartridge being held at a wrong angle by a bad magazine, rough breechface or tight extractor.

I think the gun needs attention by a competent and conscientious 1911 experienced gunsmith. I would not dream of DIYing the heart of the pistol, although you might ask Tuner on THR.

Bullet setback in Blazers is caused by the aluminum case having less tension on the bullet so if there is anything wrong with the feeding, it shows up sooner. I tried hard to like .45 Blazers years ago when they were new on the market but never could get them to run right in my then guns. Cheap 9mm Blazer from Academy is great.
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