Hello gents, got a Sightron scope on the way. It has a 34mm tube with 60mm objective (68mm outside dim). Using 20 moa base. Is there an intuitive app/thread/site that can help choose rings that will leave enough room between objective lens and barrel without sitting too high? I come from the hunting rifle camp mounting scopes as low as possible for cheek weld and aesthetics. The rifle has an adjustable cheekpiece but I still prefer as low as is practical. Thanks