The Barnes Suppressor Series .300 BLK 220 Grain Sierra MatchKing OTM Subsonic ammunition is purpose-built for shooters who demand quiet, consistent performance from their suppressed rifles. Each 20-round box is loaded to Barnes’ exacting standards with premium Sierra MatchKing open-tip match bullets and clean-burning propellants that help minimize fouling and gas blowback.

This subsonic .300 Blackout load is optimized for smooth cycling and stable flight at lower velocities, making it an excellent choice for precision work, range training, and dialing in dedicated suppressor setups. The combination of a heavy 220-grain MatchKing projectile and polished brass cases delivers reliable feeding, repeatable accuracy, and a refined shooting experience backed by Barnes’ reputation for quality ammunition engineering.

Key Features:

• Manufacturer: Barnes
• Model: Suppressor Series .300 BLK 220gr Sierra MatchKing OTM Subsonic
• Caliber: .300 Blackout (7.62x35mm)
• Condition: New
• Bullet Weight: 220 Grains
• Bullet Type: Sierra MatchKing Open Tip Match / Jacketed Hollow Point
• Muzzle Velocity: 1060 FPS (Subsonic)
• Rounds Per Box: 20
• Primer Type: Boxer, Non-Corrosive
• Case Type: Brass, Reloadable
• Best Use: Range, Target, Precision Shooting, Suppressor-Optimized Platforms