It's a 2 inch field cannon (5 foot long barrel) with a 3 inch resourvoir. Normal ammunition is a 1/2 - 2/2 bag of corn kernels (bout same size as bbs, much cheaper) mixed with fake plastic practice golfballs (5 foot radius killzone rule).
Other ammunition that can be used is those little nerf balls but we don't have any.
Thinking of building a 3inch by 10 foot cannon with a 4 inch resourvoir. Would work well with tenis balls and their 10 foot radius kill (this is what other airsoft groups use for tennis balls)... and lot's of corn.
Wonder if any events in the north east USA would l