4831 and 4350 seem to be where I would START. You may not get the desired velocity with the 4350. Checking my reloading records I use 4831 and RL 19. I believe I was pushing a 115 BT with 51 gr of 4831 somewhere around 3050? (trying to remember) I think I stayed with the 4831 because it gave me decent grouping with the 115 gr BT for deer and the 85 BT for groundhogs, trying to keep it simple.