Underwood 300 Blackout 220gr Match Hollow Point

Underwood 300 Blackout Match Ammunition

Underwood has engineered this 300 Blackout cartridge specifically for shooters who demand precision and reliability. Whether you're running a suppressed rifle or pursuing match-grade accuracy, this ammunition delivers consistent performance.

Bullet Design

The 220-grain hollow point boat-tail projectile combines proven match-grade engineering with efficient aerodynamics:

• Hollow point design creates a small meplat that reduces drag and improves ballistic efficiency
• Boat-tail configuration ensures stable flight characteristics across a wide velocity range
• 0.69 ballistic coefficient provides excellent in-flight stability
• 0.331 sectional density delivers effective penetration and energy transfer

Performance Specifications

• Velocity: 1030 feet per second (subsonic)
• Muzzle Energy: 518 foot-pounds
• Caliber: 0.308 inch
• Bullet Weight: 220 grains
• Ballistic Coefficient: 0.69 (G1)

Brass and Reloading

Underwood uses nickel-plated brass cases that offer significant advantages over traditional brass:

• Enhanced corrosion resistance for long-term storage
• Improved feeding reliability across all firearm actions
• Superior cosmetics and easier cleanup during reloading
• Boxer-primed for straightforward reloading
• Non-corrosive formulation

Practical Applications

This ammunition excels in suppressed rifle systems where subsonic velocities are essential. The match-grade bullet construction makes it suitable for precision shooting, while the subsonic design ensures reliable suppressor operation without compromising accuracy. Each box contains 20 rounds.

Note: This ammunition contains lead and is safe for use in suppressors.