223 Rem – 55 gr FMJ-BT – Federal (AE223BK) – 1000 Rounds (Bulk Pack)

For AR-15 owners who train often, a single 1,000 round box of 223 is the most economical way to buy a trusted range load. This listing is Federal American Eagle 223 Remington 55 grain full metal jacket boat tail ammo, MPN AE223BK, sold as a 1,000 round bulk pack.

Federal rates this load at 3,240 fps with 1,282 ft-lbs of muzzle energy. The 55 grain boat tail FMJ is the standard 223 practice bullet and holds its accuracy well enough for zeroing and steel at carbine distances. Because it is loaded to 223 Remington specifications, it runs safely in both 223 and 5.56 chambers. A full metal jacket does not expand, so it should be used for target practice and training rather than varmint hunting or home defense.

This ammunition fits rifles chambered in 223 Remington, including AR-15 rifles, the Ruger Mini-14 and Ranch Rifle, the Kel-Tec RDB, the Savage Axis and 110 in 223, the Mossberg Patriot, and the CZ 600 Alpha in 223. It can also be fired in rifles marked 5.56 NATO. A common question is why some AR-15s cycle 223 less vigorously than 5.56. 223 is loaded to lower pressure, so a rifle with a long gas system or heavy buffer may cycle more softly, though most run it without issue. Another common question is how to keep a bulk box organized. Many shooters move rounds into ammo cans or stripper clips after opening.

Federal AE223BK is new production ammunition, not reloads, made in the USA by Federal in Anoka, Minnesota. It uses reloadable brass cases with boxer primers and is non-corrosive. This listing ships as 1,000 rounds of 223 Rem 55 grain FMJ-BT in a single bulk box. Buying the whole thousand from one lot keeps your rifle’s zero and cycling consistent across many training sessions.