My son and I took it out to the farm and got some pretty AMAZING numbers. Shot 500 rounds of JSB 33.95 2900psi on reg 4 turns in on hs.( I have a Heavy Hammerspring and a light valve spring, so your settings will be different) Shot 1" groups @ 100yds all day long. I played with reg and HS settings till I found an AMAZING hot tune for the .22 Got 69.9 fpe wth 33.95 pellets ..lol.. Needless to say I'm thrilled with this build. Powerhouse .22 for sure. 40gr slugs on order, this is a 70fpe .22 Avenger.