The grip frame on the X-Frame series interchanges with current K-frame and L-frame guns. In other words, any wooden grip that would fit a current 686 will fit the .500 Magnum.
10-500 USD or so
Impossible to answer without knowing what "usual" translates to in terms of condition, finish, accessories, sights, grips, etc.. Range of 10-500 USD
@ 52 yrs old; 50-500 USD
100-500 USD
38 special is only a revolver caliber. that's like saying a 44 magnum revolver or a 500 special revolver. a revolver is a revolver
50-500 usd
50-500
Smith and Wesson 500 magnum revolver
Colt or S&W 1917
50-500 usd
Could range from 50-500
The .500 S&W Magnum is the most powerful handgun cartridge in production. Smith & Wesson Model 500, most powerful revolver. There are other handguns that are larger but are not in production. One off customs etc.