OK, you’re going on your first moose hunt in Alaska. The hunt is a 14 day unguided float trip, you’re taking your 375 Ruger for moose and bear protection. What factory ammunition are you using?
Absolutely anything will work. I personally reload 270gr Barnes TSX. I would buy what's available locally and give it a try. You have a powerful cartridge shooting a heavy bullet into flesh. It can't do anything but kill.