Federal Premium LE556DMR — 5.56x45mm 77 Grain Sierra MatchKing OTM — 20 Rounds

Description Federal Premium LE556DMR — 5.56x45mm 77 Grain Tactical Sierra MatchKing OTM — 20 Rounds

Item Details Condition: Factory New

Federal Premium LE556DMR — 5.56x45mm NATO 77 Grain Tactical Sierra MatchKing OTM Manufacturer: Federal Premium Ammunition Part Number: LE556DMR Caliber: 5.56x45mm NATO Bullet Weight: 77 Grain Bullet Type: Sierra MatchKing BTHP (Boat Tail Hollow Point) — Open Tip Match Muzzle Velocity: 2,750 fps Muzzle Energy: 1,293 ft-lbs Quantity: 20 Rounds Per Box Intended Use: Law Enforcement / Designated Marksman Rifle (DMR)

The Federal Premium LE556DMR is purpose-built for one of the most demanding roles in law enforcement and military service: the Designated Marksman. Where standard patrol rifle ammunition is engineered for close-to-medium range engagements, the DMR load is designed to deliver match-grade precision and reliable terminal performance at extended distances — the gap between a standard carbine and a full sniper system. Federal's LE line has long been trusted by agencies across the country, and the LE556DMR represents their latest thinking on what a duty-grade precision 5.56 round should be.

At the heart of this load is the Sierra MatchKing Boat Tail Hollow Point projectile — one of the most decorated match bullets in the world. Sierra's MatchKing line has been the gold standard for precision rifle competition and long-range accuracy for decades, used everywhere from Camp Perry to military sniper schools. The 77 grain weight offers a meaningfully higher ballistic coefficient than standard M193 (55gr) or M855 (62gr) loads, which translates to less wind drift, better retained velocity at range, and flatter trajectories. At 500 yards, the LE556DMR is still pushing 1,673 fps and delivering 479 ft-lbs of energy — well above the threshold for reliable terminal performance.

Federal specifically engineered this load for semi-automatic DMR platforms, which means the ammunition is optimized for the pressure curves and feeding characteristics of AR-pattern rifles. This is a detail that matters: not all match-grade ammunition cycles reliably in semi-automatic actions under field conditions. The LE556DMR is built to function as a duty load, not just a range load. Law enforcement marksmen and military operators can run it through their gas-operated systems with confidence. The "LE" designation also signals that this is a professional-grade product not typically found on commercial shelves, making it a compelling offering for qualified buyers.

The 77 grain OTM has also earned a strong following in the civilian precision rifle and competitive shooting communities. Shooters running AR-15s with 1:8 or 1:7 twist barrels will find this bullet stabilizes perfectly and delivers excellent sub-MOA accuracy potential from quality barrels. Whether the buyer is a law enforcement officer building a duty DMR kit, a competitive shooter looking for a factory load that performs like custom handloads, or a serious hobbyist who wants the best Federal has to offer in 5.56, the LE556DMR delivers.

Condition Overall Condition: Factory New — Sealed, unfired factory ammunition. Storage: Stored in a climate-controlled environment.

What's Included

• 1 box Federal Premium LE556DMR — 5.56x45mm NATO 77 Grain Sierra MatchKing OTM (20 Rounds)