.44 mag has no where near the chamber pressure of the .460 and .500 mags.
Pressure is irrelevant. Recoil energy and velocity is what is relevant and a .44 or .454 that weighs half as much will place far greater strain on a scope than your monstrosity. Your sixgun, without all that crap on it, goes 82oz. That's 5.2lbs plus an oversized scope which will be at least another pound and a bipod that probably pushes a pound too. Sorry but this is basic stuff.