Do you have a longer barrel? Is your hopup set for the bb you plan to use on the field?
I have standard stock Novritsch barrel with supressor and stock piston. Hopup is set for the bb im using on the field, chrono is properly setup for measuring my bbs that i use. Barrel and hopup chamber is clean, cylinder cleaned + lubed.. Other people with litteraly completely same setup have normal power output 3.2, 3.3JDo you have a longer barrel? Is your hopup set for the bb you plan to use on the field?