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The Winchester USA M855 is built for shooters who put rounds downrange regularly. This 500-round box of green tip ammunition represents everything Winchester does well: dependable ammunition that cycles cleanly, shoots accurately, and doesn't break the bank for high-volume training sessions.
What makes the M855 different from standard 5.56 rounds is the steel penetrator tip nestled in the lead core, which gives it better performance against barriers and harder targets. The 62-grain full metal jacket projectile is heavier than lighter 55-grain loads, meaning slightly less wind drift at distance and better stability from rifles with proper twist rates. The brass cases are reloadable, so if you reload, you're getting extra value out of every box.
These rounds are manufactured to military specifications and loaded with precision components. You get Lake City brass cases, clean-burning powder, and the distinctive green-painted tip that identifies this round's steel penetrator design. The full metal jacket construction ensures smooth feeding through your rifle and reliable cycling, while the non-corrosive primers and cases mean zero complications during or after shooting. This ammunition delivers a muzzle velocity of 3,060 feet per second with 1,289 foot-pounds of muzzle energy, giving you flat trajectory and consistent impact energy across typical training distances.
This is range ammunition through and through. It shoots, it cycles, and it doesn't jam in properly maintained rifles. Multiple users report tight groupings, zero misfires, and the kind of reliability you need when you're trying to put a lot of rounds downrange. The 500-round box is sized for shooters who actually use their ammunition rather than collect it, making it ideal for regular practice sessions, tactical training drills, or simply maintaining rifle proficiency. Winchester's reputation for quality control means each round performs like the last one, so you can focus on your shooting rather than worrying about inconsistencies.
M855 rounds have a steel penetrator tip embedded in a lead core, which gives them enhanced penetration through barriers compared to all-lead-core rounds. The 62-grain bullet is also heavier than typical 55-grain loads, resulting in slightly better wind resistance and flatter trajectory. This makes M855 particularly useful for training at variable distances and shooting steel targets, though it requires proper barrel twist rates (1:9 or faster, ideally 1:7) for reliable stabilization.
Yes, if your AR-15 is chambered in 5.56x45mm NATO. Make absolutely sure your rifle is marked for 5.56 NATO and not just .223 Remington, as these chambers have slightly different dimensions. Your barrel twist rate should be 1:9 or faster to properly stabilize the heavier 62-grain projectile, though 1:7 is ideal. Most modern ARs have 1:7 or 1:8 twist rates, so compatibility is typically not an issue.
Check with your range first. Some indoor ranges restrict M855 ammunition because of its steel penetrator core, particularly if they use steel backstops or have other safety considerations. Many outdoor ranges and private facilities allow it without restriction. It's always worth calling ahead to confirm what your specific range permits.
Yes. The Winchester brass cases are non-corrosive and specifically listed as reloadable. This means you can recycle the cases after firing, which adds significant value if you handload ammunition. Just make sure to inspect the cases before reloading and follow proper reloading procedures for your equipment and experience level.
| UPC | 020892229280 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | WM855500 |
| Bullet Weight (Grains) | 62 |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Case Material | Brass |
| Grains | 62 gr |
| Shipping Weight | 13.79 |
| Units per Box | 500 |
| Cost per Round | 0.64 |
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