For years all I would buy was Redfield bases and rings.I've never had a complaint with the Redfield stuff. A couple years ago I tried Millet rings.They appear to be quality. Leupold's I've never used but there's probably not a nickels worth of difference between the Loopy and Redfield stuff.My best advise is buy good quality bases and rings. The scope can only be as good as the mounting will allow.

Ruger Redhawk