I read a post about 30BR, and load data for one with a 1/10 twist and a 150gr bullet, I guess I don't get around much but what would you use this far, I have a 30BR I love 1/17 twist for use in VFS, I think a 150 in maybe 1/12 or even 14 would be cool for a 150 or 155 , I can't remember what is palma twist? so anyway I love 30BR would like another interested in this 1/10 twist and I guess there is a special reamer for certain amount of freebore?