When I coached at Ashland/Paul Blazer, in Ashland, Ky., they had a .10 Gauge monster named the Blazer Blaster. It was on large farm wheels, the barrel consisting of a 6" section of well casing. Someone had cut down a .10 gauge Shotgun and welded it to the end of the well casing. The result was a great smoke show and noise that reverberated off the stadium structure. The shells were hand loaded black powder.