IMO, FWIW, if you're going for a lightweight gun for steel challenge why would you want to shoot full power loads in it. You don't necessarily have to go down to mouse fart loads, but a lighter load will help with recoil and be a little faster.
I only played with it a little on a previous pcc, but I tried a quick release mount for my optic on the pic rail. It worked well in that didn't lose zero taking it on and off.