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Old September 12, 2012, 11:43 AM   #5
Woody55
Senior Member
 
Join Date: June 19, 2012
Location: East Texas
Posts: 407
@rrp said:

Quote:
Maybe too much crimp? All you need to do is take the bell down when crimping. I hope this helps.
I don't reload 9 mm Luger, but I've had a problem with overcrimping in .40 S&W. It resulted in a slight bulge that was still large enough to affect the angle that it exited the magazine from. This caused maybe one in five rounds to jam.

I discovered that I didn't need to bell the mouth of the case to seat bullets. I discovered that I didn't need to crimp either. The problem went away.
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