I just started shooting an AirForce Texan LSS .257 w/34" barrel Can any members share what they may be getting with slugs, 65,76,80,86 grains +/- I only have 65gn NSA BTHP. Starting with a full bottle @ 3000psi I'm getting 1065~1080fps for the 1st 3 shots. I have ordered the above slug weights...