hi went to a gunsmith a few good miles from my house and purchased a brand new aa s200 had it for a few weeks was loving it but something just wasnt right so when i went back to pick up then ten shot conversion i asked him to check the power of the rifle so he went in the back came out and said its firing at 9ft lbs ,so i explained that i had bought the rifle 3 week ago why was it so low anyway he asked me to wait i waited in the shop for about 3 hours ,then he came back out from the back and said he had sorted it and its now firing at 11.3 ft lbs but when i got home to fit the 10 shot convers