the link you posted was very helpfull dom, but is 100 yards far 4 a cannon of that type? i think im going to head down 2 the hardware store 2 moz and have my self some fun........

Hi i am kinda new to this so here goes nufin......... i am going to make my first spud cannon and was wondering what you think are the best sizes for the barrel and combustion chamber???(i dont want the cannon to be massive but i want it to be powerfull) also i have read that ppl are using computer ...