as long as the ring size is correct for the tube diameter, and the ring type is right for yer base, figuring out ring height for bolt clearance becomes the important issue, and sometimes that's trial and .... error. i want my glass as low as possible to the barrel's bore and still have decent bolt clearance. someone that has yer scope on their axis needs to chime in and tell ya what rings did the trick for tube diameter, base type and clearance height.