For what it's worth, here is what Cooper Firearms reccomends with all their rifles. They make superb factory rifles and guarantee their .22 rimfires to shoot .250" 5 shots@50yds, the 17 RF .250" 3 shots@50 yards and centerfires .500" 3 shots@100yds.


This is straight out of the Cooper Arms owner's manual that came with my newest one, page 7