I don't have an 85 but a 75 instead which has the same mounting system. I have the Sako Opti Lok bases and rings. They are made well and a fairly solid mounting system. I have the SS ones and they are bead blasted that matches the gun. I'm not all that crazy about Sako mounting system though. The Opti Lok's are on the high side and even with the low rings there should be plenty clearence for a 50mm objective. I have a Conquest with a 44mm objective and there is a pretty good sized gap. It does line up with my eye peferctly which is what counts. The Opti Lok's can be expensive if you can't get some one to deal with you.