Not much experience with any other powders, but RL22 in 160 partitions and Sierra Game Kings have been stelar for me.
My 63gr RL22, Rem 9 1/2 Magnum, FC or WW brass with 160NPT flies at ~2900fps. I have not chronoed again, but 64 of RL22 was even more accurate and so was 64.5, I assume those would be in the 3000+ range. No pressure signs at all, so I could push it even more, but fast enough of hunting.
