clear pvc combustion ?

[nibbler125]

I want to build a 100% clear pvc cannon with a 6" long by 3" wide combustion chamber and for barrel have a 3' long by 2" wide bore but im mostly worried that scince the clear pvc iv seen dosent have a pressure rating so do you guys think it is safe to use

[starman]

Sched 40 clear PVC is pressure rated...I assume that's what you have.

Might I suggest a somewhat larger chamber...will be easier to fuel and more to see when you shoot it in the dark...