amlew Posted January 16, 2013 Share Posted January 16, 2013 (edited) I know the KKM 9mm 1:32 barrel is really accurate with 115 gr Sierra and XTP bullets, but does anyone have any experience with it shooting factory 115gr FMJ? I'm having a 9mm 1911 longslide built for target shooting but I do not reload. I know I can purchase these 115 gr match loads from Atlanta Arms. Just not sure, if I could afford to consistently. For my situation, I'm not sure if I should go for 1:20 vs 1:32 twist rate for the barrel. I know I could stick with 115gr weight when purchasing factory FMJ. Any thoughts would be helpful. Thanks Edited January 16, 2013 by amlew Link to comment Share on other sites More sharing options...
Chuck Anderson Posted January 18, 2013 Share Posted January 18, 2013 What do you want to shoot? I have a 1:32 in my Bianchi gun. Works great with 115 XTPs and works just fine with FMJ 115. It does not work with 147s. At all. You can get really excellent 5 round groups but it normally takes 6 rounds to do it because one of those little buggers will have wandered off. Unless you're going to focus on NRA AP or need extreme accuracy I'd stick to the standard twist barrel. There is a reason it's standard. Link to comment Share on other sites More sharing options...
amlew Posted January 23, 2013 Author Share Posted January 23, 2013 Thanks for your input. I think I will stick with the standard 1:20. Basically, I was wondering if anyone knew which twist rate shoots 115gr factory fmj more accurately. Link to comment Share on other sites More sharing options...
bonglee0507 Posted January 24, 2013 Share Posted January 24, 2013 KKM! Link to comment Share on other sites More sharing options...
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