Does this scope have "Side Focus" or Front Bell "Adjustable Focus"? Also if it has Bull Barrel, it could make a difference. For my Simmons 4-12x44 w/SF, it required HIGH rings(Ruger 77/22 with taper barrel, rings came with rifle). For my Weaver V16 4-16x42 w/A/O it took HIGH rings(Weatherby 243 with taper barrel), because it has A/O(adjustable objective). I have a Marlin 17HMR and mounted a BSA Sweet 17, 3-12x40 w/A/O and it too took high rings and clears bull barrel by 1/8". I use Weaver Quad Lok rings and they work very well from WalMart at a reasonable price of $11. So if your scope has front bell Adjustable Objective on top of 44MM lens, you might need to go to "Extra High" rings to clear barrel.