Hornady Subsonic Rifle Ammunition 300 Blackout – 190 Grain, Sub-X, 20 Rounds (80877)

• 300 Blackout subsonic rifle ammunition designed for low velocity shooting use
• 190 grain Sub-X projectile engineered for expansion at subsonic speeds
• Muzzle velocity rated at 1050 feet per second for reduced sound signature
• 20 rounds per box suitable for suppressed shooting and specialized applications
• Subsonic series designed for consistent expansion and reliable terminal results
• Brass cases provide dependable feeding and consistent ignition performance

The Hornady Subsonic 300 Blackout 190 Grain Sub-X 20 Round Box is a rifle ammunition load designed for subsonic shooting applications. This rifle ammunition uses a 190 grain Sub-X bullet and has a listed muzzle velocity of 1,050 feet per second.

The Hornady Subsonic 300 Blackout 190 Grain Sub-X 20 Round Box features polymer-tipped expanding projectiles, brass cartridge cases, and a 20 round configuration for 300 Blackout rifles. This product is used for subsonic shooting where reduced velocity and controlled expansion are required. In typical setups, the 190 grain projectile weight and centerfire cartridge format define its use across compatible rifle platforms. The Subsonic series identifies this rifle ammunition category, and each cartridge maintains consistent bullet weight, case dimensions, and factory-loaded specifications for specialized applications.