Winchester WB556MC55D 5.56 NATO 55gr FMJ BT Ammo - 2000 Rounds

The Winchester WB556MC55D delivers consistent performance for high-volume training and tactical applications with 55-grain full metal jacket boat tail projectiles. This bulk case provides 2,000 rounds of reliable 5.56x45mm NATO ammunition designed for AR-15 platforms and military-specification firearms.

What Makes This Different

Winchester's military contract manufacturing ensures each cartridge meets NATO specifications for pressure and velocity consistency. The boat tail design reduces drag and maintains stability at extended ranges compared to flat-base bullets. Quality control processes include individual case inspection and powder charge verification for uniform performance across all 2,000 rounds.

Key Features

• 55-grain full metal jacket boat tail projectiles for enhanced ballistic coefficient
• NATO-specification brass cases with boxer primers for reliable ignition
• Muzzle velocity of 3,240 fps from 20-inch barrel
• Compatible with all 5.56 NATO and .223 Remington chamber firearms
• Bulk packaging in 500-round boxes, 4 boxes per case
• Non-corrosive powder and primers for extended storage life
• Manufactured to SAAMI and NATO pressure standards

Range testing demonstrates consistent 2-3 MOA accuracy from quality barrel systems with minimal velocity deviation. The FMJ construction penetrates soft targets effectively while the boat tail design maintains energy downrange for training scenarios up to 300 yards. Brass cases extract cleanly from semi-automatic actions and reload reliably for budget-conscious shooters.

Technical Specs

• Caliber: 5.56x45mm NATO
• Bullet Weight: 55 grains
• Bullet Type: Full Metal Jacket Boat Tail
• Muzzle Velocity: 3,240 fps (20" barrel)
• Muzzle Energy: 1,282 ft-lbs
• Case Material: Reloadable brass
• Primer: Non-corrosive boxer
• Quantity: 2,000 rounds (4 boxes of 500)
• Country of Origin: USA

This bulk ammunition case provides exceptional value for training facilities, competitive shooters, and tactical teams requiring consistent performance. Winchester's century of manufacturing expertise ensures reliable function in demanding conditions where ammunition failure isn't an option.