The 45-70 cartridge (like its cousin, the 444 Marlin) is a POWERFUL cartridge for hunting or defense. If you’re a handloader and want to use the heaviest possible bullets, select a Marlin lever gun. Theirs is the strongest action (as well as the Browning lever gun), and most manuals have special loading specs for them. They can reach 600-800 yards in the right hands, and a 300 gr. .458 bullet will easily cycle through the lever action, heavier bullets require feeding one at a time. If you want or need a scope, they eject brass from the side, not top like the weaker Winchester action. My suspicion is that they will defeat most body armor.