I have both the half-lug 6 1/2" and the PC John Ross 5." With optics, they will both shoot 1" groups at 25 yards off of a rest. With irons, I can shoot the same with the 6 1/2" but not quite with the 5." I attribute this to the latter's heavy SA trigger pull (4 3/4 lbs). The 6 1/2" has a SA...