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Old 02-04-2013, 11:04   #15
Andrew Wiggin
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Join Date: Dec 2011
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Yes, compressed powder might be an issue but the bearing surface of the bullet is the primary factor affecting chamber pressure. The Barnes technician advised me that I should treat this bullet about the same as a 200 gr jacketed bullet, even though the 155 gr all copper is longer.
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Just here for the 10mm death ray talk.

A whole mess o' 10mm (and a few other caliber) ballistic tests here:
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