The very first .357 Magnum cartridge was introduced in 1934 by Smith and Wesson.
Yes
Revolver made by D Wesson chambered for 357 Magnum
Does not exist.
Cartridge
357 Magnum
38 Special and 357 Magnum
Never made by S&W
1980
You take it to a gunmsith.
Smith & Wesson
N frame 357 Magnum