Ammunition

Ammunition is the term used for the projectiles fired from guns.

Fallout, Fallout 2 and Fallout Tactics
Some guns can use multiple types of ammunition, some of the most common variations being Armor Piercing, Full Metal Jacket and Jacketed Hollow Point.

There are three major statistics attached to ammunition: Armor Class Modifier, Damage Resistance Modifier, and Damage Modifier.

''Note: The Fallout 1 engine does not implement the ammo modifiers, so there is no difference between JHP and AP ammo. (explanation thread)''

Pistol/Sub machine gun

 * 2mm EC
 * HN Needler Cartridge
 * 9mm Ball
 * 9mm AP
 * 9mm JHP
 * .44 Magnum Ball
 * .44 Magnum AP
 * .44 Magnum JHP
 * .45 Caliber

Shotgun

 * 12 gauge Shotgun Shells
 * Flechette Shells
 * Slug Shells
 * EMP Shells
 * Rubber Bullets

Rifle / Machine gun

 * .303
 * .306
 * 5.56mm
 * 7.62mm
 * .50cal
 * .50cal AP

Energy

 * Small Energy Cell
 * Micro Fusion Cell

Rockets

 * Explosive Rocket
 * Rocket AP
 * Rocket Electrical
 * Rocket Sabot

Miscellaneous

 * 40mm grenade
 * Canister of Acid
 * Speargun Bolt
 * Flamethrower Fuel
 * Tank Shell

Fallout 3
Unlike previous games, in Fallout 3 there is only one type of ammo available for each caliber.