When shot out of a .375 H+H, I feel a 300 grain Barnes Triple Shock is the ultimate ammo for moose and bear. For sheep and caribou, or all-around ammunition, I have seen great results with Nosler Partition. 20 rounds is sufficient.
Like anything, you get what you pay for. The above-mentioned items easily sustain me for 100 days in the bush each season. If you buy the proper gear you don’t need much of it and you will enjoy the use of it for years to come. If you have inferior equipment, sooner or later, the Alaskan elements will exploit it and you will not be able to enjoy your experience. Trust me, when you experience some real Alaskan weather, you will not regret one penny spent on your gear. -Billy