When was the magnum invented?

Answer 1

Magnum is a word that means large- and at one time, was most commonly used with wine bottles larger than standard. When the .357 was being developed in 1935, the creators looked for a word to describe this larger, more powerful cartridge- and Magnum it was. In much earlier days, the term Express was used (Express trains were fast movers)- so you had names like the Holland & Holland .600 Nitro Express.