saab Posted November 21, 2010 Share Posted November 21, 2010 Why do 124 gr 9mm shoot 2" to the right of 115 gr in my M&P9 PRO from a bench rest at 25 yds? Link to comment Share on other sites More sharing options...
G-ManBart Posted November 21, 2010 Share Posted November 21, 2010 It's hard to say exactly why, but it's not terribly uncommon to need a windage adjustment when changing bullet weights. I had to drift the rear sight on my issued Glock when we switched from 165gr to 180gr ammo (.40). R, Link to comment Share on other sites More sharing options...
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