I use a lot of IMR 4350. There are faster, maybe better powders, but it’s does well for me in a dozen cartridges. I load 59 grains behind a partition or a ballistic tip in 30-06’s. I’ve shot that load in a dozen or more rifles, great groups in every one of them. I load 64 behind 140’s in my 7 mags, always good too. Those I know offhand.