I shot a black buck antelope at 50 yds, broadside with a .257WBY and Swift Accu-Bomb bullets. I call them Accu-Bomb, because it never exited and was found under the off-side hide. The hydrostatic shock must have been something, because the inside of that antelope was pure liquid mush from stem to stern. Worst animal I've ever cleaned. I think I gagged the whole time.