IMR 44350 is a good powder, H 4831 a better powder, and RL22 the best powder in my 270. Shoot a lot with Nosler BTs, when go hunting use Solid Base or Partitions. I have killed multiple deer and elk with the above combos, including a couple 5x5 bulls with the 150 Solid Base, RL22 and Fed 210Match primers. The BTs probably work for deer, but I always use the Solid Base or Partitions for hunting.