never done an appleseed shoot but as far as ar15 irons go, with the difference in sight height over the bore centerline, i zero mine in at 50 yards and then confirm its on again between 200 and 250. mine coms back on at 225-230 yards. that was with the federal xm193. need to reconfirm my new ammo choice though.
"Only the dead have seen the end of war." - Plato