The T-Rex Bullet

Have you ever heard of the T-Rex Bullet?  I am going to assume you haven't, otherwise I wouldn't be telling you about it (plus there aren't exactly that many T-Rexs around to hunt).  Well, it is was originally made to stop head-on charges from big game.  However, it never actually proved to be any more effective than other large caliber rounds on the market, so now it is more or less the Hummer of ammunition.  Anyways, here is a hilarious video of people attempting to fire one of these bad boys and nearly blowing their shoulder out of the socket, it's pretty funny (also, that's all I've got, it's Saturday, sue me):