With a 44 mm scope, medium rings should work fine. I like Leupold rings and mounts. With one exception, I have a set of Con-trol rings and Mts. on my custom 6.5 X .280 AI. Never had a problem with any. Even my old Savage 99, ..300 Savage has Leupold rings and mounts securing a Leupold M8 4 Xwith tapered crosshairs.