Federal Cartridge XM193 Commercial ,223 Caliber, 55 Grain, (Per 20) XM193C

This is Federal Lake City .223 / 5.56 XM193 55gr. FMJ ammo. This ammo is manufactured by Lake City and is manufactured to US Military M193 specs. This is considered to be the best .223 55 grain ammo money can buy. It is brass cased, boxer primed, and 100% non-corrosive.



With the appearance of full metal jacket military 5.56 ammunition on the commercial Market, it has come to the attention of the Sporting Arms and Ammunition Manufacturers' Institute (SAAMI) that the use of military 5.56mm ammunition in sporting rifles chambered for Caliber .223 Remington cartridges can lead to higher-than-normal chamber pressures and possible hazards for the firearm, its user and bystanders. Tests have confirmed that chamber pressures in a sporting rifle may be significantly higher in the same gun when using military 5.56mm ammunition rather than commercially loaded Caliber .223 Remington cartridges, according to SAAMI.



SAAMI points out that chambers for military rifles have a different throat configuration than chambers for sporting firearms which, together with the full metal jacket of the military projectile, may account for the higher pressures which result when military ammunition is fired in a sporting chamber. SAAMI recommends that a firearm be fired only with the cartridge for which it is specifically chambered by the manufacturer.



The .223 Remington is rated for a maximum of 50,000 CUP while the 5.56mm is rated for 60,000 CUP. That extra 10,000 CUP is likely sufficient to cause a failure in a chamber that's only rated for the sporting .223 Remington.



The .223 Remington and the 5.56mm NATO, when checked with a chamber ream from a reliable manufacturer of each, also have discernable differences in the areas of freebore diameter, freebore length (lead) and angle of the throat.



Specifications :

- Caliber : 5.56mm M193 Ball (223 Remington)

- Bullet Type :Metal Case Boat-Tail

- Bullet Weight :55 GR

- Muzzle Energy :1270 ft lbs

- Muzzle Velocity :3250 fps

- Rounds/box : 20 Rounds Per Box, 25 Boxes Per Case

Enter your ZIP code for an exact shipping cost on this item. Hazardous-materials fees, where they apply, are included in the total shown.

Read our full shipping policy

Firearms must ship to a licensed dealer (FFL), who completes the transfer and the required background check when you collect the item.

How FFL transfers work · Terms of sale · Product and legal restrictions