Sorry, I'm not familiar with Sako rings. If you mean one base is thicker as one rings sits higher above the reciever like a Ruger 77, look at the reciever and see which reciever ring is higher. The lower one goes on that one. If you mean wider, email Leupold and get an answer is my suggestion. If one ring is wider so it's windage adjustable then it goes in the back.