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If you're running through rounds at the range on a regular basis, bulk ammunition in a bucket takes the hassle out of box management and lets you focus on putting rounds downrange. The Remington UMC .223 Rem 55-grain FMJ comes packed 250 rounds to a bucket, making it a solid choice for dedicated training sessions or stacking ammo for the long term.
This limited-edition release celebrates the 250th anniversary of American independence. Remington loaded it with the same reliable components they've refined over generations: factory-new brass cases and their specialized Kleanbore primers. That primer technology matters more than most shooters realize. It reduces carbon buildup in your bolt carrier group and chamber, which keeps your rifle running cleaner and maintains a more consistent point of impact from first shot to last.
The 55-grain full metal jacket design cycles reliably in both AR-15s and bolt-action rifles chambered in .223 Remington or 5.56 NATO. You're looking at a published muzzle velocity of 3,240 feet per second and 1,282 foot-pounds of energy at the muzzle. That velocity is flat enough for a respectable trajectory out to around 300 yards if you're zeroed at 200. The FMJ construction makes it suitable for high-volume training without worrying about your targets or range facilities.
UMC ammunition comes from Remington's value-focused line, but don't let that fool you into thinking it cuts corners on reliability. These rounds are manufactured in the USA at Remington's Lonoke, Arkansas facility using the same machinery and processes they've relied on for over 140 years. The brass is reloadable, so if you're into hand-loading, you've got decent brass to work with after you're done shooting.
Yes, this ammunition is compatible with both .223 Remington and 5.56 NATO chambers. The .223 round can be safely fired in most 5.56 NATO chambered rifles. However, 5.56 NATO rounds are loaded to higher pressures and should only be fired in firearms specifically rated for that cartridge. Always check your rifle's specifications to confirm.
Yes. This ammunition uses factory-new brass cases with Boxer primers, which makes them suitable for reloading. After firing, you can collect the brass and reload it using standard reloading equipment and procedures.
Kleanbore primers are formulated to reduce fouling and carbon buildup compared to standard primers. This means less residue deposits in your rifle's bolt carrier group and chamber, which keeps your gun cleaner, requires less maintenance, and helps maintain more consistent shot placement over extended shooting sessions.
At 3,240 fps, this load delivers a reasonably flat trajectory out to around 300 yards if you're zeroed at 200 yards. It works well for training at moderate distances. If you're planning on regular shooting beyond 300 yards, heavier 62 or 77-grain loads tend to retain velocity better and may suit your needs more effectively.
| Bullet Weight (Grains) | 55 |
|---|---|
| Caliber/Gauge | .223 REM/5.56 NATO |
| Case Material | Brass |
| Cost per Round | 0.60 |
| Grains | 55 gr |
| Manufacturer | |
| Manufacturer Part Number | 21388 |
| Model | |
| Product Type | Full Metal Jacket |
| Shipping Weight | 6.565 |
| Units per Box | 250 |
| UPC | 047700213880 |
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