jimmy101 wrote:A question, why can't you use threaded fittings? The cam locks are great but if you are only swapping barrels on occasion then just go with threaded fittings.
BTW, what's the chamber and barrel made out of? From you concern about using plastic with pressurized air I assume that means both are metal.
ASME-code tank, all pipe, fittings, and barrel will be steel. All pressure rated for air to 125+psi, I expect not to exceed 60psi ever. There will be a pop-safety valve for 125psi on the tank. Barrel sizing might be a bit difficult, but I think I can make it work.
Screw on fittings work but they also cause issues with the supports for the barrel needing to accommodate rotation. A QR system just makes my life easier, as long as the cost isn't too astronomical.
The other thing I'm still considering is whether or not to put a breach load on it - I think I'll probably go without for now and possibly retrofit later (shouldn't be that big a deal to retrofit).
My plan in terms of budget is to make expandable systems - so start with a base system now, on a budget, and make it relatively easy to add systems. For example, a velocimeter so I don't need to calculate speed off high-speed video every shot! This is certainly not as cheap as doing it "right" from the start, but it's way cheaper than building a low-end system now and the right system later!
Thanks for the advice on the QEV, will definitely go that route.