Super Redhawk in .454 with 7.5" barrel = 53oz
John Ross 5" 500 riding in primo Ken Null leather on a Simply Rugged belt from Rob Leahy = 57oz
Smoothness, style, toughness, pointability and versatility for that 4oz premium = priceless.
Take that Lord Humongus X frame and put a Titanium cylinder in it like the 520 and you'd be under the SRH weight. The tooling costs for a new frame are not small, wishing for a new midpoint between the N and X ain't gonna happen but Mr. Ross has addressed the issue
here