Underwood 518 50 Beowulf 350gr XTP JHP Ammo - 20 Rounds

The Underwood 518 delivers maximum stopping power with its 350-grain Hornady XTP jacketed hollow point bullet in the formidable 50 Beowulf caliber. This premium ammunition transforms AR-15 platform rifles into devastating close-range hunting and tactical tools. Each cartridge generates tremendous energy transfer while maintaining controlled expansion for reliable terminal performance.

What Makes This Different

Unlike standard rifle cartridges, the 50 Beowulf operates at lower pressures while delivering substantially more kinetic energy than typical intermediate cartridges. The 350-grain XTP bullet expands reliably at velocities ranging from 1,200 to 2,000 feet per second. Underwood's loading specifications push this cartridge to approximately 1,870 fps muzzle velocity, generating over 2,700 foot-pounds of energy. This combination provides devastating terminal ballistics within 200 yards while remaining manageable in standard AR-15 receivers.

Key Features

• 350-grain Hornady XTP jacketed hollow point bullet for controlled expansion
• Nickel-plated brass cases resist corrosion and enhance feeding reliability
• Muzzle velocity of approximately 1,870 fps with 2,700+ ft-lbs energy
• Compatible with standard AR-15 lower receivers using 50 Beowulf upper conversions
• 20 rounds per box with consistent powder charges for repeatable accuracy
• Flash-suppressed powder reduces muzzle signature in low-light conditions
• Boxer-primed cases suitable for reloading applications

The 50 Beowulf excels in scenarios requiring immediate incapacitation within 150 yards. Large game hunters appreciate its ability to drop hogs, bears, and deer with single shots. Law enforcement agencies utilize this cartridge for barrier penetration and vehicle interdiction. The substantial recoil requires proper technique, but experienced shooters achieve consistent 2-3 MOA accuracy from quality barrels. Weather-resistant nickel plating ensures reliable function in harsh environments.

Technical Specs

• Caliber: 50 Beowulf (.500 diameter)
• Bullet Weight: 350 grains
• Bullet Type: Hornady XTP Jacketed Hollow Point
• Muzzle Velocity: ~1,870 fps
• Muzzle Energy: ~2,700 ft-lbs
• Case Material: Nickel-plated brass
• Primer: Large rifle, Boxer-type
• Quantity: 20 rounds per box
• Overall Cartridge Length: 2.25 inches
• Manufactured in USA by Underwood Ammo

This ammunition represents the pinnacle of big-bore AR-15 performance for hunters and tactical professionals demanding maximum effectiveness. The proven XTP bullet design ensures consistent expansion while Underwood's quality control maintains lot-to-lot consistency. Stock levels fluctuate due to high demand from serious users who understand this cartridge's capabilities.