223 Rem – 55 gr FMJ – Winchester (W2231000) – 1000 Rounds Bulk Pack

Bulk packed ammunition skips the small boxes and passes the savings along, which is exactly what high-volume AR-15 shooters want. This listing is Winchester USA 223 Remington 55 grain full metal jacket ammo, MPN W2231000, sold as a 1,000 round bulk pack.

Winchester rates this load at 3,240 fps with 1,282 ft-lbs of muzzle energy. The 55 grain FMJ bullet is the most common 223 practice weight, with a flat trajectory at typical range distances and good accuracy from 1:7, 1:8, 1:9, and 1:12 twist barrels. It runs AR-15 gas systems reliably and feeds smoothly from standard magazines. A full metal jacket bullet is not designed to expand, so this ammunition is intended for training, plinking, zeroing, and steel rather than hunting.

This ammunition fits rifles and pistols chambered in 223 Remington, 5.56 NATO, or 223 Wylde, including AR-15 rifles and pistols, the Ruger Mini-14 and American Ranch, Smith and Wesson M&P15, Springfield Saint, Palmetto State Armory and Aero Precision builds, and bolt actions marked 223. A common question is how a bulk pack is packaged. The rounds come loose in a single sealed container rather than in 20 round boxes, so many shooters transfer them to an ammo can and load magazines with a speed loader. Another common question is whether 223 is safe in a 5.56 rifle. Yes. A 5.56 or 223 Wylde chamber fires 223 Remington safely, but do not fire 5.56 NATO in a rifle marked only 223.

Winchester W2231000 is new production ammunition, not reloads, made in the USA. Each round uses a reloadable brass case with a boxer primer and is non-corrosive. This listing ships as a 1,000 round bulk pack of 223 Rem 55 grain FMJ, a single production lot that keeps your rifle’s zero consistent from the first magazine to the last.