.44 Round, Magnum (Fallout 3)

The .44 Round, Magnum is a type of ammunition $$

Gameplay
Very few enemies carry weapons that use this ammunition. Even with the Scrounger perk, .44 Magnum ammunition still remains less common than 10mm or .32 Caliber ammunition. The 44 Magnum Round is the most expensive pistol caliber ammunition.

Weapons using this ammunition

 * Scoped .44 Magnum
 * Lincoln's Repeater
 * Blackhawk
 * Mysterious Stranger's .44 Magnum (console command only)
 * Callahan's Magnum
 * Paulson's Revolver

Locations

 * Random ammunition boxes might have this ammo type.

Merchants
Several merchants will frequently have large quantities of .44 Magnum ammunition in stock (10, 15, even 20+):
 * Chief Gustavo in Tenpenny Tower.
 * Flak 'N Shrapnel's in Rivet City.
 * Sydney after completion with her as a companion in the Stealing Independence quest.
 * Lucky Harith, the caravan merchant dealing in weapons (after merchandise upgrades at Canterbury Commons).
 * Smiling Jack in Evergreen Mills.
 * Tulip in Underworld.
 * Knight Captain Durga in the Citadel.
 * Moira Brown in Megaton.
 * Knick Knack in Little Lamplight.
 * Michael Masters in Tenpenny Tower after helping the ghouls move into the tower.
 * Pronto in Paradise Falls, after bringing him 20 Chinese Assault Rifles.
 * Seagrave Holmes in Rivet City.
 * Lydia Montenegro in Tenpenny tower.
 * Panada in The House of Wares.
 * Friday in The Pitt Downtown.