Winchester Ranger 5.56mm NATO 64-grain Bonded Solid Base JSP (Product Code: RA556B)

If you are a serious defensive rifleman curating "Tier-1" ammunition for an emergency, home-defense, or patrol carbine, look no further. The Winchester Ranger 5.56 NATO 64gr Bonded Solid Base (SKU: RA556B) is a legendary, ultra-restricted law enforcement duty cartridge engineered specifically to meet the grueling, barrier-blind performance metrics mandated by the Federal Bureau of Investigation (FBI).

While standard commercial .223 defensive rounds suffer from anemic velocities and fragment into dust the moment they hit hard obstacles, the RA556B is a true, full-pressure 5.56mm NATO duty load designed to punch completely straight through heavy intermediate barriers and neutralize threats instantly.

The FBI’s Barrier-Blind Masterpiece

The magic behind the RA556B lies in its projectile architecture: the Nosler Bonded Solid Base jacketed soft point.

Unlike standard jacketed bullets where a thin copper cup is simply pressed over a lead core, this projectile features a solid copper base that comprises nearly one-third of the entire bullet's length. The lead core is molecularly bonded to this heavy copper foundation. When fired at full 5.56mm NATO pressures, this design ensures the bullet behaves like an armor-defeating freight train, maintaining structural geometry through the harshest real-world obstacles.

• Caliber: 5.56x45mm NATO (Run strictly in 5.56mm or .223 Wylde chambers)

• Bullet Weight: 64 Grain (The ideal heavy-duty sweet spot for 1:7 and 1:8 twist rifle barrels)

• Bullet Type: Nosler Bonded Solid Base Protected Soft Point (JSP)

• Casing: Heavy-duty Winchester military/LE brass, fully crimped and lacquer-sealed

• Muzzle Velocity: ~2,935 ft/s (Full NATO pressure for maximum short-barrel velocity retention)

• Muzzle Energy: ~1,293 ft-lbs

• Packaging: 20 rounds per tactical duty box (1,000 rounds per master case)

Rigorous Ballistic and Performance Metrics

1. Unrivaled Vehicle Auto-Glass Defeat

In forensic law enforcement testing conducted by renowned ballistic expert Dr. Gary Roberts, the RA556B proved itself as the gold standard for vehicular engagements. Fired into bare 10% ordnance gelatin, it punches deep to 17.1 inches with a massive expanded footprint of 0.46 inches. More importantly, when forced to pass through angled, laminated automobile safety glass, the bullet retains virtually 100% of its weight, driving straight forward to achieve 13.6 inches of penetration. It does not veer off course, fragment prematurely, or keyhole.

2. Full 5.56mm NATO Pressure Profile

Most law enforcement agencies are mistakenly sold .223 Remington pressure loads, which drop drastically in velocity when fired out of short-barreled carbines (like a 10.5" or 11.5" SBR). Winchester loads the RA556B to true, hot 5.56mm NATO pressures. This provides an extra 200 ft/s of insurance, ensuring that even out of an SBR or AR pistol, the bullet retains the velocity needed to initiate rapid, devastating hydraulic expansion upon impact.

3. Protected Soft Point (PSP) No-Jam Feeding

Traditional exposed lead soft-point rifle bullets are notorious for shaving lead or hanging up on aggressive M4/AR-15 feed ramps under high cyclic rates of fire. Winchester utilizes a specialized Protected Point profile. The copper jacket wraps up and around the nose, leaving only a tiny, recessed lead point exposed. This gives you the smooth, flawless feeding profile of a standard Full Metal Jacket target round, combined with the controlled expansion of a premium hunting bullet.

Pros & Cons

Pros

• Authentic FBI Contract Stock: One of the absolute best general-purpose defensive carbine loads ever developed for hard-use real-world environments.

• Complete Tactical Sealing: Features heavy primer pocket crimps and advanced cap/mouth lacquer sealants to completely lock out water, oil, and humidity over decades of storage.

• Low-Flash Propellant: Loaded with advanced powders chemically treated to mask muzzle signature, protecting your night vision and preventing flash-blinding during indoor or low-light defensive strings.

Cons

• Strictly 5.56mm NATO Pressures: Because it is loaded to hot, authentic military-spec pressures, it should not be fired in vintage bolt-actions or specialized target rifles stamped strictly for low-pressure .223 Remington chambers.

The Verdict

The Winchester Ranger RA556B 64gr Bonded Solid Base is a masterclass in modern combat ballistics. It completely bridges the gap between match-grade accuracy and barrier-blind destruction. If you want the exact same round trusted by federal field agents to punch through car doors and windshields while maintaining perfect weight retention, this is the ultimate "ready-for-anything" case to lock away in your tactical inventory.

The Takeaway: AI can sometimes make mistakes, but it's never a mistake to secure your restricted FBI-grade Ranger Bonded 5.56 cases from Eagle Eye Guns.