I think that while I haven't used it, there is a difference between a 44 Mag with full house loads and a 500SW. Nobody has done terminal ballistics study of 700 Grain Underwood factory 500 SW ammo. My view is why the hell not!
Muzzle Energy: 2238 ft. lbs. for 700 Grain Underwood.
Energy: 833 ft/lbs from 7.5” barrel= 44 Mag Garrett hammerhead 325 grain bear loads.
500 SW in chest holster while packing meat is good insurance.