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Old August 9, 2012, 06:20 AM   #4
jephthai
Senior Member
 
Join Date: July 5, 2007
Posts: 463
Nope, no magic. Once the bullet leaves the barrel its up to the bullet to keep its velocity. That's what ballistic coefficients (BC) are all about. Some bullets are more aerodynamic than others, and there are lots of factors that influence this quality. Powder is not one of them -- once the bullet leaves the barrel, powder's job is done.

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