I have the same gun, did a trigger job on it first off. That helped considerably. Another thing with mine is, it shoots better with a dirty barrel. Mine won't start getting really great groups till I have 40 rounds or more through it. Why is that? I have no idea but I do know it will shoot 3 shots and you can hide them behind a dime @ 200 yards. It's the best shooting gun I own.
I am shoot 55gr. Sierra HP's pushed by Win 748.
