just built a spud gun today!!! its huge

[Insomniac]

I suppose, but any way you look at it, cell core abs is one of the weakest types of pipe to use. If you used pressure rated pvc your gun would be strong enough to take higher pressures. This would enable the gun to be enhanced with propane or mapp meters and a chamber fan.

[frankrede]

cell core pvc is the enemy.
Not abs.

[Kenny_McCormic]

yeah abs is better for combustions even if it is cellcore because abs can take the pressure spike better dont believe me look at this http://www.sentex.net/~mwandel/cannon/cannon.html