Achieve ultra-quiet precision with Atomic Ammo .308 Winchester 175 Grain HPBT Subsonic ammunition, engineered specifically for match-grade accuracy and minimal acoustic signature. Ideal for suppressed shooting setups, this heavy-match load delivers smooth, sub-caliber flight dynamics without the loud sonic crack of standard full-power rounds. Equip your bolt-action or suppressed rifle with the tactical edge of American-made subsonic performance. Key Features & Specifications Hollow Point Boat Tail (HPBT) Bullet: Features an aerodynamic match-grade profile and boat-tail design for flat trajectories, superior stability, and consistent long-range grouping. Optimized Subsonic Velocity: Carefully tuned to run under the speed of sound (~1,050 FPS), eliminating the sonic boom for near-silent cycling when paired with a suppressor. Match-Grade Precision: Assembled with high-grade components and tight quality-control tolerances to deliver reliable feeding and benchrest-level consistency. Clean-Burning Propellants: Specially formulated powder minimizes fouling and residue inside your barrel and suppressor, keeping your firearm cleaner for longer sessions. Premium Brass Cases: Reloadable, factory-fresh brass casings ensure smooth feeding, positive extraction, and added long-term value for handloaders. Atomic Ammo engineered this .308 Win subsonic round to strike the ideal balance between heavy projectile energy and extreme noise reduction. Unlike lighter subsonics that suffer in stability, the 175-grain HPBT projectile maintains exceptional flight stability and impact energy downrange while maintaining suppressed stealth. It is the perfect choice for tactical training, precision target shooting, and night hunting where signature reduction is critical.