I guess I wasn't aware that the mounting of a scope can make it fail so catastrophically, but all of my scope mounts are lapped, so that might make a difference, but I did it to make sure they tracked as well as they possibly could. That said, I have a 4x Leupold on my .454 Casull barrel in a set of triple rings by Redfield, I've shot hundreds of rounds through it already, from light as possible to as heavy as I want, and the scope holds perfect. It's my second Leupold, the other was on an XP-100, but both have been great performers for me. I have Simmon, Tasco, Elite 3000, and Alaskan Guide scopes on my rifles, no problems with any except Tasco, it fogs up pretty quick. All of my rile rings are lapped, but the biggest rifle I shoot is also a .30-06, so we're not talking a whole lot of recoil here either. Just thought I'd put in my 2 cents.
Selmer