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Old 01-28-2013, 17:41   #7
RYT 2BER
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Join Date: Apr 2011
Location: The Gunshine State
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Quote:
Originally Posted by _The_Shadow View Post
What some of you don't realize is that the 100% copper bullets are very long for their weight. The 155 Barnes TAC-XP is longer than a Hornady 200 XTP, thus the bullet occupies powder space and will raise chamber pressures. Finding a balance of velocity/performance versus pressure will be paramount!

Also over driving any HP design can roll back the expansion past it maximum and shed petals or become a smaller diameter too guickly.
You may very well be correct on all accounts but again, then isn't that a glaring reason against copper? If its converting your 10mm into a .40 then there is no reason. Jmo
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