Weaver quad lock has worked for me. The rings from Millet are good rings. The quality of your brand name rings and mounts are first class. Like brands of cars, guns, and most things we have a lot of choices now and people develop favorites for different reasons. You will also find a wide range of prices. Try the rings you have, shoot the gun some and go from there. Start with some light loads from a rest. Put some leather under the gun where the barrel forcing cone area is revolvers will eat bags and rest. Scopes make it a lot easier to shoot groups when age sets in. Good luck.
