Smith & Wesson .500 Magnum Revolver explodes in his hands

Cole McCartney posted this video of a shooter firing a Smith & Wesson .500 Magnum Revolver. This is a massive weapon and not one you want to have something go wrong with! However, when fired, a giant ball of flames appears and the barrel actually blows clean off of the revolver and the cylinder flies open. The shocked shooter is left holding the frame!

The guy is lucky not to have been injured. While faulty loading is a common cause of exploding guns, no one is sure what happened in this case.