You might be interested in this story of Henry Harpending going on a buffalo hunt in south Africa:
https://web.archive.org/web/20170105231156/http://the10000ye...It's very funny throughout, but here's the buffalo being repeatedly shot with a rifle:
> I aimed and fired. “Bang-whump”, the bang from the rifle and the whump as the bullet struck the buffalo. He jerked a little, then simply stood there staring at me. “Bang-whump, bang-whump” as I fired two more rounds.
> Now he tossed his head and snorted, then started running toward us. Buffalo charge with their nose high, only lowering their head to use their horns on contact. I fired one more round at the charging animal, head on, simply pointing at him because he was so close, then turned and ran. We discovered later that the bullet had struck his shoulder, ricocheted off his scapula, and exited through the skin on his side. It certainly didn’t slow him down at all: I might as well have been shooting at a railroad locomotive.