Picked it up about a month ago. Since I have owned one before I immediately added a plenum, speed adjuster. Etc. before the plenum I was getting 42 FPE with the 25.3 g JSB. Good for about 40 shots from 220 bar down to 130 bar. Pretty good for a small package. Added the plenum and lowered the reg about 10 bar. Also decided to lower power to 30 FPE. Got 55 shots down to 135 bar - could have got more, just didn’t shoot it off the regulator. Wanted to see how high a power increase was possible, turned regulator back up about 12 bar and added heavy spring. Now max is 45 FPE and shot count at a modest 30 FPE level is 55 shots from 205 bar to 125 bar where it started to fall off the reg. Reason for odd starting numbers bar is my tanks are nearly done. I will have more when I refill.