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.243 95gr Sierra MK

What is the recommended twist rate for the .243" 95gr Sierra MK bullet? Any guys out there successfully shooting in a 1-10 twist 6br?
 
The bullet was designed to work in a 1:10" twist. Chuck Greer, in the recent Savage Gun of the Week, shot the 95gr Sierra in a 15" Savage Striker pistol and they stabilized fine out to 500 yards. In a 6BR rifle, with a stout load, you shouldn't have trouble stabilizing... provided that the TRUE twist is 1:10" or faster. Some barrels' twist is actually slightly different than that which is stamped on the barrel.
 
I've been shooting them in a 10 twist but, I am not sure they are stabilized enough at 20 degrees and 7000ft in elevation.
I hope it warms up soon so I can check the difference in group size. 90 Scenars are printing .3" groups from an AR The SMks more like .5-.7" and the holes appear to have a larger skid mark on 1 side.
 
10tw at ~60deg and 1000'asl was still point-on at 1030yds out of a Tikka 243 when launched at velocities that I have beaten with my 6BR and the same bullet.

JB
 

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