4 Bore is an obsolete black-powder rifle with a (roughly) 1 inch barrel used for hunting big game in Africa. Scott at Kentucky Ballistics got a modern version of that and decided to test it against body armor. Consider this as the latest in the “BattleSwarm features videos of absurdly large rifle calibers for your viewing pleasure.”
Though it has a 2,150 grain bullet producing over 200 pounds of felt recoil, the round is too flat and slow to actually penetrate the body armor, but it packs so much force that it just drags most of the body armor into the chest cavity. The zombie torsos do not fare well.
Thanks to Dave Hardy for bringing the video to my attention.
Soft body armor offers an undoubted advantage in that a 4 Bore projectile may easily be removed from the body cavity using only the “torpedo” formed at impact. No tools required!
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That huge rifle looks like a true monster that would be very difficult to shoot more than once.
Karamojo Bell killed 500 elephants with a 7X57 (7 mm Mauser) which is smaller than all he displays except the .223 and significantly smaller than the 375 H&H.