Shooting out of a 20" bolt gun. I have speer 168 hpbt, and 178 gr amax so far. I have imr 4895, N150, RL 15, imr 4320, and varget on the way. I only have a lb or 2 of each powder so Im not trying to use it unless its worth it. Which would work the best for my loadout? Im looking on each powders website but im still kinda confused.