Forgot to mention , had a replica full size 12 pdr Mountain Howitzer, Cememt filled beer cans or cannister using ball bearings.
Now on a rather somber note. A fraternity had a small cannon that they fired every time our football team made a touchdown. Unfortunately the gun was passed down from one frat member to the next without anyone getting proper training. The LAST time it was fired, the idiot stuffed newspaper down the barrel for a wad. Following that with a WAD of WET newspaper. You can guess what happened! Back end blew off injuring a couple of people who were walking behind the end zone. He might have just as well welded the muzzle shut! They tried to say the gun was defective and someone should sue the manufacturer, Until the truth came out.