Factory ammo is ridiculous, but I can reload a cast 460 grain bullet with a generous helping of H110 or Li'l Gun at a velocity of 1600 fps for about $2.40/box of 20. Fifteen grains of Unique with a 350 grain cast SWC makes a super accurate "plinking" load (5 shots into 4" @ 100 yds with open sights,
consistently), and is still about the same muzzle velocity as a 240 grain .44 mag, but with the recoil of light .357 loads. A 325 grain jacketed bullet can be pushed to over 2000 fps from the 8 3/8" barrel, and a 270 grainer to 2200 fps.
The 4" version is no less accurate, and with a slightly faster burning powder, such as AA #9 or Blue Dot, rest assured that you will get a full powder burn in the shorter tube. What good is it? Guides and others who regularly occupy the same territory as big browns, kodiaks, and grizzlys are buying them up right and left. It's compact, packs a BIG punch, and is easier to carry than a 12g or .45-70 guide gun type weapon.
The .500 X-frame isn't as punishing as most people believe, the weight and muzzle brake really tame it down. Now don't get me wrong, those 440-460 grainers @ 1600fps+ are punishing after awhile, but nothing like a .475 Linebaugh and less even than full-bore, heavy .454 loads out of an unported barrel.