Originally Posted by bobnob17
Originally Posted by MontanaMarine
I was shooting this old standby. Rem varmint 700, 308 Win, 1/12 twist, cut to 20.5". 208 Amax at 2580 fps via RL-17. SWFA 12X scope, 40-MOA Nightforce rail.


I'm a novice LR shooter at best, but I would have thought 1-12 would not have stabilised that bullet.

Interesting info. Thanks.

Am just setting up a 308 Win for long range myself. Using 168g Amaxes. Might try your 208 Amax in my 1-12 barrel.


I'm an old LR HP shooter that always operated under that assumption too but MontanaMarine has long debunked that theory.

I have a buddy who shot a 12 twist M1a at 1000 yds and smk 190's very well.

I would still say as a general rule faster twist stabilize heavies better, BUT! I wouldn't go swapping out a barrel for a faster twist until you have tried it.

Last edited by southwind; 04/01/15.