Looking to start designing a first Co2 sourced cannon. attached is a drawing(poorly) roughly of what I am thinking of doing. Right now I expect to utilize a 3 way valve to facilitate the Primer section of the QEV which will fill to a reservoir under the Atmosphere from a larger (10lb) regulated co2 ...

Hey guys new member, but not entirely new to pneumatic cannon builds. I am looking to assemble a C02 powered cannon utilizing a QEV and 3 way valve to fill a reservoir from a larger source to allow for proper expansion and consistency in shots. i've attached an image that roughly lays out the plan. ...