5.56mm Round (Fallout: New Vegas)

The 5.56mm round is a type of ammunition in Fallout: New Vegas.

Characteristics
5.56mm is a standard intermediate calibre rifle cartridge used in most military, hunting and sporting rifles. Traditionally magazine fed, they usually come in magazines of 30 rounds and are an extremely common round to be found. They can be bought in bulk from vendors for very little caps and are used in the majority of the Guns rifles.

5.56mm, Armor Piercing
Armor-piercing rounds are designed for punching through armor plating, for this purpose they have a greatly strengthened case with a specially hardened and shaped nose. Due to the high muzzle velocity and penetrative property's of the round, damage to the target is slightly reduced. However they can be rather hard to find and vendors almost never have more than 200 in stock at any given time.

5.56mm, Hollow Point
Hollowpoint bullets mushroom and break up on impact, causing massive trauma on fleshy, un-armored targets. However, this also means they break up when they hit things like armor plate, drastically reducing the weapon's penetrating power.

5.56mm, Surplus
Surplus ammunition is poor grade ammunition made in larger quantities by using corrosive materials in their construction. The resulting process is a slightly more damaging round but at the cost of more regular maintenance on a firearm due to the highly damaging corrosive materials used in the rounds construction.

.223 round
A common commercial hunting round designed for Civilian use, most commonly used in hunting small to mid-sized game. .223 ammunition does less damage due to lower internal pressure, resulting in less stopping power; the shape of the projectile, however, is better suited to penetrating armor. These rounds tend to put less stress on the chamber, resulting in better weapon durability. .223 ammunition can be bought in bulk from vendors.

Used in

 * Light machine gun
 * Ratslayer
 * That gun
 * Varmint rifle
 * Service rifle
 * Marksman carbine
 * All-American

Appearances
The 5mm round appears in Fallout: New Vegas.