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.