(YouTube Link)
John Gill and Gary Arold of Hurley, New York built a compressed air cannon in 2006 that can fire a pumpkin (but they prefer squash as ammunition) up to a mile away. Adam Bosch writes in the Times Herald-Record:
The cannon is mostly used on weekends to attract people to Gill's Farm Market on Route 209 in Hurley, but sometimes the guys get together at the 1,500-acre farm and blast it when nobody's around. Just for fun.
They've shot pumpkins, scuba tanks and a basketball filled with corn and foam insulation. They once scattered some geese by accidentally shooting into the flock. Then there's the time they shot a bowling ball more than a mile.
"The first time we shot a bowling ball, that's was probably the worst thing we ever did," Arold says. "It kept going and going and going."
Link via CrunchGear
and also : "goose scattering" sounds pretty gore to me :D