Designed specifically for subsonic performance, Hornady .300 AAC Blackout 190 Grain Sub-X combines a heavy 190 grain projectile with Hornady’s specialized Sub-X bullet technology. The bullet features a lead core, gilding metal jacket, cannelure, and patented Flex Tip insert within the hollow-point cavity, with long jacket grooves and a flat profile engineered to promote reliable bullet performance at reduced velocities. This makes it a highly specialized option for .300 Blackout rifles and pistols where a heavy subsonic load is desired.
Key Features
Caliber: .300 AAC Blackout
Weight: 190 Grain
Bullet Type: Subsonic eXpanding (Sub-X)
Casing: Brass, reloadable
Primer: Boxer, non-corrosive
Packaging: 20 Round Box
Made in the USA
 
Ballistics
Test Barrel Length: 16"
Distance
Velocity (fps)
Energy (ft-lbs)
Trajectory (inches)
Muzzle
1050
465
‑1.5
100 Yards
998
420
0
200 Yards
955
384
‑33.4
300 Yards
918
355
‑104.6
Ballistic Coefficient: .437 (G1)
Hornady developed Sub-X ammunition around the unique demands of subsonic shooting, using powders selected for consistent performance and a bullet design intended to function effectively below the speed of sound. The 190 grain Sub-X gives this 300 BLK load a substantial projectile while retaining the feeding and functioning characteristics expected from factory ammunition, making it suitable for hunting, target shooting, and recreational use where a dedicated subsonic cartridge is appropriate. Hornady .300 AAC Blackout 190 grain Sub-X ammunition delivers specialized subsonic performance with advanced Hornady bullet technology!