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Old December 20, 2000, 03:32 PM   #4
Steve Smith
Senior Member
 
Join Date: December 9, 1999
Posts: 4,131
I don't know about 9mm, but for .45 acp you can jsut about bet that if your crimp measures .470" or less, it's too much. My setup has them crimped at .471". Like Jerry said, it headspaces on the mouth, so you don't want to crimp it too much.
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