IMHO. there ain't no basic gun collection complete without one each of the following.
1.) A good bolt gun in the territory of .30 cal. (270,30-06, etc.).
2.) A good pump action shottie.
3.) A quality .357/.44 mag revolver.
4.) A good .22LR auto rifle.
5.) A reliable 1911.
that said, if your reload, the .500 S&W could be fun, if you like hand cannons( I know I do). I recommend shooting a Marlin 1895GS 45-70 before buying one. I too lusted after one in stainless, till a fellow at the gun club I shoot at suggested I shoot his. My next purchase was a lever gun, but it wasn't the Marlin in 45/70.