.45 Auto

.45 Auto is a type of ammunition in the Fallout: New Vegas add-on Honest Hearts.

Gameplay
Among the Mormons of New Canaan, it was the ammunition of their signature weapon, the .45 Auto pistol. After the completion of Honest Hearts, the ammunition type will also begin appearing in the base game traders inventories (Gun Runners, Cliff Briscoe, Mick & Ralph's etc.).

Production
Standard, +P and super .45 Auto rounds can be crafted at a reloading bench. A single cartridge requires the following ingredients:

Breakdown
Breaking down a .45 Auto round yields:

Weapons using this ammunition

 * .45 Auto pistol
 * A Light Shining in Darkness
 * .45 Auto submachine gun

Locations

 * The Great Khan armorer and Quartermaster Bardon will stock huge amounts of this ammunition and its casings after the completion of Honest Hearts. Bardon is especially reliable, as he will usually have over 1200 regular and over 200 +P.
 * Sold by most suppliers who deal in weapons, such as the Gun Runners, Cliff Briscoe, Mick & Ralph's, etc.

Behind the scenes
Joshua Sawyer stated that .45 auto weapons were specifically created for Honest Hearts, and were not intended to be included in the base game.