223 Rem 55 Grain Ammo For Sale

55 grain 223 Remington is the workhorse weight for the cartridge - the standard FMJ load that armies, plinkers, and AR-15 shooters have leaned on for decades. The bullet that fed the M16 family (as M193 ball) lives on in civilian 55gr loads from every major manufacturer, and it remains the default choice for high-volume range work, varmint hunting at moderate distances, and stockpiling.

The 55gr projectile leaves a 20-inch barrel around 3,200 feet per second, delivering a flat trajectory inside 300 yards and enough fragmentation potential out of standard-twist barrels to be effective on coyote, prairie dog, and similar varmint-sized game. Most factory rifles chambered in 223 Rem or 5.56 NATO are zeroed for 55gr loads at the factory, which is part of why it dominates the AR-15 ammo market.

Why shooters choose 55 grain 223

• Default load: the most widely produced 223 bullet weight, available from every major manufacturer.
• Range and training: cheap per-round cost and consistent ballistic profile.
• Varmint hunting: bullet construction options (V-Max, soft point, FMJ) fit small to medium varmints.
• Standard zero: most factory AR-15s ship sighted for 55gr loads.

What are the most popular 223 brands offering 55 grain loads?

• Federal 223 Ammo
• Fiocchi 223 Ammo
• Hornady 223 Ammo
• PMC 223 Ammo
• Winchester 223 Ammo
• Wolf 223 Ammo

You can filter our entire selection using the left sidebar to see which 55 grain options we currently have in-stock under the Manufacturers filter.

Related 223 ammo selections

• 223 Remington (all weights)
• 223 Varmint Ammo
• 500 Rounds of 223 Ammo
• Bulk 223 Ammo
• 5.56x45 NATO Ammo - the military counterpart
• AR-15 Ammo

Best 223 ammo guides

• Best 223 Ammo
• Best 223 Deer Hunting Ammo

For a comprehensive look at how different 55 grain 223 loads perform across muzzle velocity, energy, and trajectory, see our 223 Remington ballistics database.