Maxim 300blk Subsonic 190gr Tui Sba

Maxim Defense Industries' .300 Blackout Subsonic 190-grain TUI ammunition is purpose-built for short-barrel rifle platforms where standard velocity loads underperform. Developed in partnership with Fort Scott Munitions, this load addresses a critical gap in SBR ballistics: delivering terminal performance from reduced-velocity platforms without sacrificing wound cavity depth or energy transfer. The 190-grain subsonic configuration maintains subsonic velocities (below 1,125 fps) essential for suppressor users, while the Tumble Upon Impact (TUI) projectile design produces ballistic wound cavities exceeding performance standards of both expanding and fragmenting rounds.

The subsonic 190-grain bullet weight is optimized for .300 Blackout's intended subsonic performance envelope. Unlike standard rifle ammunition, this load prioritizes reliable expansion and cavity creation at the lower velocities inherent to short barrels and suppressed fire. The TUI technology specifically addresses the ballistic limitations of subsonic rounds by engineering the projectile to tumble upon soft-tissue impact, creating expanded wound channels comparable to or exceeding traditional expanding ammunition—a critical advantage when muzzle velocity is restricted by platform design. Each round weighs 0.88 lbs per box, standard for 50-round .300 Blackout ammunition.

This ammunition is engineered for law enforcement tactical teams, military special operations personnel, and civilian shooters running suppressed short-barrel .300 Blackout rifles in close-quarters duty or training. The subsonic velocity specification makes this load ideal for noise-suppressed applications where maintaining velocity control is essential. Buyers should verify their rifle's twist rate and barrel length compatibility with 190-grain projectiles, and confirm suppressor rating for use with .300 Blackout ammunition. This is specialized ammunition for a specific platform—not a general-purpose rifle load.