I recieved my Avenger in .25 yesterday, mounted the scope and bipod, turned down both the reg & hammer spring. I filled it with air. Took it out early this afternoon (before the rain). Reg psi at 1750, hammer spring 1.5 turns in, I'm getting 855 fps with 25.39 jsb kings. Didn't really count shots, I estimate in excess of 70. More interested in getting it roughly sighted in. This is just a rough sight in & rough preliminary tune. 1/2 inch groups at 25 yards, 1inch at 50 yards!!! I haven't put a hundred pellets thru it yet!!! I'm SERIOUSLY IMPRESSED.... WOW!!! I may need to trade my field target gun in on an Avenger in .177!