Assuming a .308 Win, it will be about the same as Varget, 41.5 to 42.5 grains of N-140 usually the accuracy load, but you may find another sweet spot between 44.0 and 45.0. Just watch the MV and pressure signs when you pass 45.0 grains of Varget, 4895, RL-15, N-140, or N-150. The 155-gr has less bearing surface than most 150-gr bullets, but every chamber barrel and brass volume is different.