That seems very high, my Steyr does about 70 shots from 190 to 110 and my FTP900 was much better then that, is it .177 or .22?
I would contact BSA and see if there is an issue or you can contact Tench on here, he has developed a regulator that is considerably better and uses much less air for the same amount of consistency.
Somehow I made TEAM ENGLAND 2012 and 2013
Illiterate writer for AirGunner
The real Kung Foo Panda.