I contacted Barnes for some data for the older 225 grain . 358 diameter X bullets, they recommended 50 grains of IMR 4895 in the 358 Winchester. This will be my moose load for the fall season.
I chronied the 225 grain Barnes at 2510 fps, I also loaded some 225 Sierra's with 47 grains of IMR 4895, haven't had the chance to chrony these loads yet. I imagine they will be close to 2450 fps, big game loads for sure.
As with any load info, start low and work up, these were safe in my Ruger Hawkeye.