My father has hunted (and killed) brown bear multiple times in AK, incl. successful hunts on Kodiak, the AK peninsula and the Seward peninsula. He always hunts with a .375 H&H, usually his Browning Stainless Stalker but last year with a Kimber. The .375 H&H cartridge is plenty for bear, can be had in readily affordable rifles, produces recoil that is manageable (tho not necessarily pleasant) for most adult males, and ammo is a) available everywhere and b) among the most affordable of the true big game cartridges. My dad is 62 yrs old, 5'11" and 165 lbs and tho he says the fun of shooting the .375 is beginning to wear off (he's been hunting with his Browning for abt 15 yrs.), he's never had a problem shooting one.