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Shortening of .357 Magnum.


  • IPA(key): /ˈθɹiː fɪftiː ˈsɛvən/


.357 (plural .357s)

  1. .357 Magnum (a class of firearm cartridge).
  2. A firearm chambered for .357 Magnum cartridges.
    • 1977 July, S. Bergman, E. Bunten, P. Klaus, LEAA Police Equipment Survey of 1972, Volume V: Handguns and Handgun Ammunition, Washington: U.S. Government Printing Office, page IX:
      Estimates of the total population of on duty handguns in the U.S. showed 70 percent of all officers using .38s and 25 percent using .357s.