type of rifle and brand,hand loads ? factory ammo ? and barrel length ? these things all play an important part in shooting 300-400 yards .as far as cartridge i see very little difference between a 270,30-06 and a 308 except a 308 case might be a tad more accurate. all 3 cartridges will shoot just fine at 400 yards in the same rifle and equipment. good luck,Pete53


LIFE NRA , we vote Red up here, Norseman