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Brian Enos's Forums... Maku mozo!

KKM barrel


waterboy

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I put a KKM barrel in my S&W CORE to replace the factory ported barrel and make the gun legal for USPSA CO. The KKM has a 1-16 twist. A 1-10 twist is pretty much standard for 9mm. The KKM barrel would not shoot my normal 147 grain/880 fps loads. The 1-16 twist is too slow unless I run them faster than I want. I did find that Bayou 124 TCG bullets shot very well from the KKM, so I use those now. But I have to drive them to 1050 fps (more powder) and the  recoil increased.

Find out what twist rate KKM has for the barrel you want. Bianchi has ( I think) a 120 PF. You can make that sub-sonic with a 147 and a soft-shooting load, but a 1-16 twist won't stabilize them at 880 fps. The twist rate can make a difference.

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