I have a quick question. I am making a tennis ball cannon and would like to find out how long I need to make the barrel to achieve maximum range. The cannon will need to be air powered and have a presure no greater than 150 psi, and will be fired by a solenoid valve. Also, im not sure if this info is needed but, the cannon will be made from 2 1/2 inch pvc (the diamiter of a tennis ball).
If anyone can lend me a hand on this that would be very helpfull.