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Old September 5, 2012, 09:09 AM   #7
jmr40
Senior Member
 
Join Date: June 15, 2008
Location: Georgia
Posts: 5,493
Anytime you change something accuracy, pressure, and velocity could change. A 55 gr bullet from company "A" may have more surface in contact with the barrel than the same weight bullet from company "B" resulting in more pressure and velocity. This may or may not effect accuracy.

Same when you change brass, primers, or even the same powder from a different can.
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