Seems like I've shot everything but FTBTs out of my 300WSM, so I can't speak specifically to those. But for the 180ish-grain bullets I've tried, I've settled on RL-17 for powder because it gives me an additional 90 fps muzzle velocity while giving up only 1/8" accuracy (still sub MOA overall). My next hunt being moose, I'd rather have the additional energy. I always limit my powder to one full grain below the recommended max for a particular bullet, so with my current LSX load, that ended being 64.4. Out of the Federal, Nosler, Winchester, Hornady, and Norma brass that I've tried, I've settled on Norma. Between the CCI and Winchester primers I've tried, I've settled on CCI.
With the endless possibilities, I'm always tinkering, always looking to get better, so if you come up with something that works for you, I'd love to hear it.