Originally Posted by FPoole
Yes, BKL makes adjustable mounts, but for elevation only. Never bent a scope by packing, but have creased a few at the parting between the base and caps with Sportsmatch. I used a ring lapping mandrel and found the mounts were sort of crimped in at the parting line. If I were to use them now I always radius this area with a file and have no more problems.
You always bend by packing. It may not set there, but it puts the scope into a bend. As per the same as misaligned mounts.
The issue is that parallax tubes on side wheel scopes run against the insider surface of the scope's tube, and although they are lubed, bending increases the force required move them and could introduce wear.