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dyl · December 29, 2012, 11:22 PM

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.

December 29, 2012, 11:22 PM	#1
dyl Senior Member Join Date: October 31, 2009 Location: Ohio Posts: 1,310	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.