tater gun

Mines got a 4.5' barrel 1.5", 2' chamber 4". I have a T handle with the grill starter in that and a high presser cap.( I had a normal one and it split and hit my brother he was ok) It will put a tater out of sight strait up and will go through 1/2" plywood at 20'. We made a tee shirt cannon at for when we sponsored the demo derby. It uses a 1000 gallon air tank with a 2" electric valve. A 20 oz soda bottle fits perfectly inside and fill half way with water with 120psi behind it also made them disappear.