Best twist rate

[texasgrunt]

The barrel length is the first question. Long tubes do well with a 9 twsit while 18" and under should be tightened up to account for the lower velocities.

I know this is resurrecting an old thread, but according to Brian Litz data the 8 twist stabilizes all the 264 rounds better (specifically the 108gr scenar where it is an increase in SG from 1.19 to 1.50). I am NOT a ballistics expert and I am asking if there is a good reason to go with a 9 twist which is widely offered. The Litz data does not factor in barrel length that I can tell and I am looking at a 22" pipe.

Thanks all...

Grunt