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Old December 29, 2012, 11:22 PM   #1
Senior Member
Join Date: October 31, 2009
Location: Ohio
Posts: 795
Different powder: better accuracy?

Please explain how this could happen:

Today I tried 2 loads through a service size 9mm pistol. Same 125 grain LRN, same primer, same OAL, but different powder. (Bullseye vs AA#5). Yet that gun liked bullseye better.

At the same trip I tried the loads in a second service size handgun and that gun liked AA#5 better.

Any clue what's going on here? I understand a barrel working better with different bullet profiles and weights (surface area) but not so much powder except for extreme cases like snub noses.
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