I happen to like the Leupold Dual Dove Tail Rings and Bases. made of steel, and very stable and secure. Sorry but they are not very sexy or tactical looking. I use them on my Weatherby Mark V in .270 Weatherby Mag with my Leupold VX 3 in 8.5X to 25X Windplex, with a 30 mm main tube and a 50mm Objective lens. I used this set up at the Bang Steel Shooting School, in Virginia, where I hit targets from 500 to 1200 yards, over the two days of shooting. Incredible fun hearing the steel go "Boing!!!" I think I fired over 80 rounds in those two days. The rings and bases remained tight, nothing moved, nothing came loose, and the scope had plenty of Elevation built in. No 20 MOA Rail was needed in this case. Here is a picture of the Dual Dove Tail Rings and Bases when the rifle had a Leupold 4.5X to 14 VX3 on it, then at the table where I shot the steel showing the Leupold Windplex 8.5X to 25 X scope. With an instructor calling the wind, this rifle hit targets at every range over and over. I will hunt Whitetail a bean field in N. Carolina this year with this rifle. It will remain in its wood stock, and I will wrap scope and rifle with Camo nonstick tape. Good Luck with your search for rings and bases.