Ever heard of a potatoe cannon? My brother in law built one using a length of 3 inch PVC pipe open on one end witha a screw cap on the other. A flint igniter is mounted on the breech end. You place a potatoe down the muzzle (get a snug fit) and open the breech just enough to spray in a good aresol propellant (hairspray works great) and close the cap. Flick the flint and you have a heck of an explosion and a potatoe that will click 75 yards easily. He is the county Circuit Clerk and I am the town doctor so we have to be discreet with this thing and only get it out on holidays to shoot at the Canada geese in his neighborhood lake.
