Funny you mention that. I have one on a .300 Win. Mag also and used it on an oryx last year at 287 yards. Was right on. I’m not a dialer so it beats holding over.That’s a great scope; had one for many years. For a 300WM 180 gr TTSX @ 2950 and zeroed at 200, the aiming points line up perfectly for 300, 400 & 500 yards.