I've tried several different bullets and powder combination in my Savage 270 WSM. I can get 140 gr accubonds to shoot 1/2 - 3/4 MOA pretty reliably with RL-19. Several other bullets and most factory ammo is around 1 MOA. When I've loaded up some Berger 150 VLD's I am lucky to get 3 MOA, it really is all over the paper at 100 yards. I've tried from just touching the rifling to .005 into the rifling & .010" in to the rifling. This is a 1 in 10" twist, should be fast enough for the 150 gr bullet. I know the berger bullet is not the problem as so many people are having success with it. Is it possible this gun just has a BIG problem with the VLD's for some reason?