Quote Originally Posted by markm View Post
My 12 twist REM 700.308 shoots 175s great. 20 inch barrel.... That 26 inch barrel is going to give you more velocity, and thus, more RPMS on the bullet.

I used to think that was B.S. until I down loaded some long bullets to sub sonic in my gun.... they key holed. But at full velocity, they shot round holes.

My 1/12 actually hates 168 smk at 1000 yards because the shape of the boat tail makes them suck in trans-sonic. I get a 12 yard spray zone of possible bullet impacts. But with 175s, I can get out to 1300 yards.
I have a Rem M700 in 300BO. It is 1 in 7 twist.