Magnum

Ammo:
 * .44 Magnum ammunition in all Fallout games.
 * .357 Magnum ammunition in Fallout: New Vegas.

Weapons:
 * Smith & Wesson M29, a weapon in Fallout 2 and Fallout Tactics.
 * Smith & Wesson M29 speed load, a enhanced version of the Smith & Wesson M29 in Fallout 2.
 * Scoped .44 magnum, a scoped revolver in Fallout 3.
 * .357 magnum revolver, a weapon in Fallout: New Vegas.