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Old February 20, 2014, 05:14 AM   #35
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Join Date: December 13, 2006
Location: Body: Clarkston, Washington. Soul: LaCrosse, Wisconsin
Posts: 1,558
FMJ bullets tumble after striking the first wall and then fragment at the cannelure.
This is very dependent on velocity, exact bullet construction, and target medium consistency. Don't expect 100% fragmentation, especially if the barrel is less than 16 inches. (e.g. M193 in an 11.5 inch semiauto SBR is a poor choice over 55 grain softpoints)
- Jon
Disequilibrium facilitates accommodation.
9mm vs .45 ACP? The answer is .429
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