That basic concept drawing (the lower one, the upper one is just an "x") seems to show a regulated tank feeding the valve from the back.... If that is the case, where is the plenum?.... You need a significant amount of air available to the valve to provide the energy for the shot without a large pressure drop.... For high powered regulated PCPs, about 1 cc per FPE you are hoping to achieve is the recommended plenum volume.... A .45 cal, or even a 9mm/.357 uses a lot of air.... Bob
Looking forward to your recovery and some details at the appropriate time.... I'm also in the hospital next week for day surgery.... I get a new ICD, the batteries on this one are toast.... Bob
Looks like valve is behind the barrel, most likely air actuated with pilot valve. If you want to surpass the existing power levels, you need to ditch the regulator from the bottle. Not the only one who has been thinking it like so if that is the case. Marko
Bill, Glad you are moving in the right direction, both with your health and your new design. Getting a prototype to work well is a serious, and admirable, accomplishment. Waiting for the next installment!