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Old November 7, 2011, 09:22 AM   #15
Charlie_98
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Join Date: August 22, 2011
Location: McKinney, TX
Posts: 840
It was my understanding that some +P brass actually has a thicker web... more brass = less volume, less volume = higher pressures with the same load in normal brass.

It may not make much of a difference in, say, .45ACP brass (unless you are running max loads of PowerPistol or something...) but it sure would in a small case like the 9mm.

YMMV...
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