Encountered this movie of a shotgun pro,this guy is pretty amazin. http://video.google.nl/videoplay?docid=-6750458630308006678
That's pretty impressive shooting, and an even more impressive rate of fire for a shotgun. If I have calculated correctly, he was firing the shotgun (12 shots in 1.7s seconds) at a rate of about 420 rounds per minute. The US has had machine guns that didn't fire that rapidly.
Quite so, very impressive shooting.
I'd still rather have a good ol' Browning A5 :D