Buffalo Bore Barnes TSX Supercharged 375 H&H Magnum 270gr Jacketed Hollow Point Rifle Ammo - 20 Rounds - This 375 H&H load is designed for use on all North American game including Alaskan game. The only North American application I would use the 300gr. TSX (item 54A) on would be on 2000 lb bison, taken with bad angle shots. In other words, item 54A (300gr. TSX) is best suited for African game and this 270gr. TSX load is best suited for North American game, although you can feel free to use either in Africa or North America, as they will both work for both applications. As always, Buffalo Bore uses real world firearms to generate Buffalo Bore's published real world velocities. Buffalo Bore prefers not to follow the industry wide, duplicitous practice of using extra long laboratory test barrels to generate exaggerated velocities that the ammo user will seldom, if ever see. With Buffalo Bore you will know what velocity your ammunition is generating in the real world, where it matters.