I actually got the chance to see one of his performances in person a few weeks ago. Very impressive. He holds the world record for throwing a bunch of clay targets (11 I think) in the air and getting them all before they hit the ground (although he couldn't duplicate this feat at the show, he tried).
At one point he set the shotgun on the table, completely unloaded. He then threw a clay pigeon (it might have been two, can't remember) in the air. While it was airborne, he picked up the shotgun, loaded it, and proceeded to vaporize the clay pigeon(s) well before it hit the ground.
And oh my goodness, golf balls will FLY (and by FLY I mean obtain earth orbit) when you use them in place of clay targets....
BTW, he was very safety-minded throughout the entire show, and reminded everyone that they should NOT be attempting anything he was doing at "home".