Another good old cartridge from the Black Powder Age. The 45-70 does stack up fairly well in the Taylor KO values I looked up a few that we have mented here. The 458 Win Mag with its 500 grain bullet at 2200 pfs has a value of 71. The 416 Rigby with its 400 grain bullet has a value of 57. The 374 H&H with its 300 grain loading has a value of 40. The 45-70 with its 540-550 grain Garret. is 54. Anyone interested in more info on the 45-70 can go to the Garret Cartidge webb site and read the stories of quite a few Cape buffalo. Grizzly and Eland taken with the Garret loads in 45-70 and 44 Magmum. The big Weatherby Magnum cartridges offer some real high KO values.