i currently a cannon with a 3/4 in modded orbit spinkler valve, 2ft 2inch pvc pipe chamber and a 3 ft barrel which is also 2 inches. i used a bike valve so fill it from the compressor but i can't lug a compressor out on the field so is there anyway i can hook it up to co2. i used it for paintball to...

sounds good turns out a nerf rocket has a two inch dia i will be doing this over the corse off this week i would also like to know how to fit a pressure gauge into that. at my local paintball field i will have to chrono it so i need to know an exact pressure so i can see what the perfect chrono will...

what should the barrel be from what i hear 2 inch wide is good but i can make it what ever i want right??

and how about the air chamber

i would like to make a nerf pocket rocket shooter i have got a 3/4 sprinkler valve i have modded it already. i would like it to be stright but small any ideas. i play semi pro scenario paintball and will use this gun to take out paintball tanks.