The 45-70 cartridge has a muzzle speed of 1,800 feet per second (549 m/s) and a muzzle energy of about 3,000 foot-pounds (4,100 J). The 460 Weatherby Magnum has a muzzle velocity of about 2,700 feet per second (823m/s) and a muzzle energy of about 5,200 foot-pounds (7,000J). The460 Weatherby Magnum also has more recoil than the 45-70. This is due to the fact that the 460 Weatherby Magnum is a more powerful round. If you are concerned about recoil, you may want to choose the 45-70 over the 460 Weatherby Magnum.