I can't pretend to be a scope mechanic, I have taken several cheap scopes apart though, and it looks like they all operate on the same mechanical principle. The "root" or heart of the internally adjustable scope seems to be the biasing screws (elev and windage) that operate in opposition to leaf spring(s). Weavers, Tasco's, Bushnells, Lymans etc have pretty stout erector springs. They also IMO have very very low amount of slop on the biasing screws. I've never felt I had the money to tear a Leupold apart, just for comparison purposes, but logic would dictate from reports of not tracking/not holding zero, that the damn springs are prone to lose their temper (or too small by design)...and the thread tolerances are pretty sloppy. Hard to believe it could be that simple...but Weaver mastered it years ago, Burris seems to have as well. It can't be that hard...can it?


Well this is a fine pickle we're in, should'a listened to Joe McCarthy and George Orwell I guess.