guys FYI - On the same thought,I see that Leupold now makes a weaver style ring. I don't know how long they have been making them but they have a metal block that slips down into the notch in the base and is tightened via an allen screw in the bottom of the ring saddle. From what I've heard it is the strongest ring of this style and is being used alot by shooters with 460 and 500 S&Ws.