Good memory Tim. Yep that's my rifle, knife and axe. The rear ring is a standard Hi Weaver ring. The front ring is a Weaver extension ring turned backwards to give me enough room to move the scope back. I probably coulda mounted it on the rear like you're supposed to, but that's the setup I had when I was using the Burris before I put the Leupold on. I just did the same thing. Works either way. Have no idea what the ring number is....had them for 14/15 years now.