I am getting 10 shots out of a custom shop 2300. 14" barrel, trigger job, Stacie breech.
40 pumps to 3000psi 10 shots from 765fps to 700fps. Then 25 pumps to bring it back up. Getting 10 shot dime sized groups at 30' with 14.8 gr, pellets. Im liking it, doubt if I will do anything else to it besides shoot it. Pellets flatten out and break up when they hit the 22cal trap. Not really an indoor shooter, not to loud outside.