Underwood 300 AAC Blackout 194gr Subsonic Ammunition

Underwood 300 AAC Blackout Subsonic Load

This ammunition represents a thoughtful approach to subsonic shooting in the 300 AAC Blackout cartridge. Loaded with 194-grain Lehigh Maximum Expansion projectiles, it delivers performance specifically optimized for pistol-length barrels.

Performance Characteristics

• Caliber: 300 AAC Blackout/Whisper
• Bullet Weight: 194 grains
• Muzzle Velocity: 1025 fps
• Packaging: 20 rounds per box, 10 boxes per case

Lehigh Maximum Expansion Technology

The Lehigh Maximum Expansion bullet represents a departure from conventional hollow-point design. Rather than relying on impact with hard surfaces to initiate expansion, these projectiles expand through hydraulic energy when contacting fluid-based mediums—the ballistic gelatin equivalent of living tissue.

The expansion process creates razor-sharp petals that remain at maximum diameter throughout penetration, maintaining the largest possible cutting surface. This contrasts with traditional jacketed bullets that expand on impact, then mushroom back along the shank, reducing effective diameter and wound channel size.

Practical Application

The subsonic velocity specification makes this load well-suited for suppressed firearms, where maintaining subsonic performance is essential for effective sound reduction. The optimized powder charge ensures reliable function in shorter barrel lengths while maintaining the terminal performance characteristics Lehigh's design promises.