getting less than 500 shots on a 20oz co2 tank

[impostal22]

i know this isn't normal...my setup has a 6 stage x chamber to a stabilizer to the valve so i should be getting more shots not less. anyone got any idea why my gun might be so gas inefficient? lvl10 classic valve...

[XVFrontplayer]

well for starters did you have the tank filled all the way? If thats not the case are you shooting hot? also if you arnt shooting paint through it the gas effiectny will be dirmatically wrose. It may be your barrel but that should make much of a difference. and level 10 uses a lot more gas but not that much more.... hopfully that gave you some insight into your problem.

[impostal22]

i didn't know gas efficiency dropped for dry firing. why is that?