Barnes Suppressor Series 8.6 BLK 300 Grain Sierra Match King (SMK) Ammo Overview: Barnes Suppressor Series 8.6 Blackout 300 Grain Sierra Match King (SMK) ammunition is designed for suppressed, subsonic shooting across a range of gas-operated firearms and barrel configurations. This load pairs the established 300gr Sierra MatchKing bullet with Barnes' ammunition standards and clean-burning propellants for consistent velocities and reliable cycling. Ideal for shooters running compact suppressed platforms or full-length configurations who demand dependable function and accuracy from a purpose-built subsonic load. Key Features: Caliber: 8.6 Blackout Bullet Type: Sierra Match King (SMK) Purpose-Built Subsonic Load: engineered specifically for suppressed, subsonic performance Reliable Cycling: built for consistent feeding and function in gas-operated firearms across varied barrel lengths Specifications: Bullet Weight: 300 gr Bullet Type: Sierra Match King (SMK) Casing Material: Brass Rounds Per Box: 20 Applications: Suppressed shooting Subsonic range use Precision target shooting Use in compact or full-length suppressed platforms Additional Features: Consistent velocities with low shot-to-shot variation Clean-burning propellants for clean suppressed performance Reliable feeding and cycling across a wide range of firearm configurations MPN: 32554 UPC: 716876863006