My first .375 H&H was a pre-War Model 70 Winchester with a Lyman Alaskan scope in an Echo side mount. The previous owner had obviously had some problems stabilizing the scope under the recoil, because the rings had been drilled and tapped for set screws and corresponding depressions filed into the scope tube.
Griffin and Howe replaced the Echo mount with one of their double lever mounts and Lyman cheerfully returned the scope to pristine condition with a new tube. I still have the Echo mount lying around in a drawer as a reminder never to buy another.
