I 50 years and a hundred or so rifles of all calibers, I have yet to have a Weaver ring of base fail in any way shape or form. Install them right and they will hold up forever. They are simple, inexpensive and tough as hell. I have used most all of them at one time but now its just Weaver. I do like the Millet windage adjustable rings. I have had them on some big hard kicking guns. They are the Weaver style.