HRNDY 300BLK 190GR SUB-X 20/200

Description

Hornady’s Subsonic line in .300 AAC Blackout is built around a specific problem: getting reliable, accurate performance from a cartridge that stays below the speed of sound while still doing meaningful work on target. The 190-grain Sub-X bullet addresses the core tension in subsonic projectile design — at these velocities, most conventional expanding bullets simply will not open up consistently. Hornady’s solution is a hollow point cavity combined with deep grooves cut into the jacket and a polymer Flex Tip insert that initiates expansion even at the reduced hydraulic pressure generated below 1,100 fps. The result is a bullet that expands where a standard hollow point would plug or fail to deform.

The brass case is reloadable and uses a Boxer primer, which matters to handloaders working up subsonic loads — the primer pocket is accessible and compatible with standard decapping and repriming tools. Muzzle velocity runs around 1,050 fps, and the ballistic coefficient of .437 (G1) means the bullet sheds velocity relatively slowly for a subsonic projectile, which keeps the trajectory reasonably flat and the energy figures meaningful out to practical hunting distances. At 100 yards the bullet still carries enough energy to be considered for medium-sized game in appropriate jurisdictions.

This ammunition is well-suited to suppressed rifles, where the heavy bullet weight and subsonic velocity remove the supersonic crack entirely, leaving only mechanical action noise. It will function equally well through an unsuppressed host — the load is not dependent on a suppressor’s backpressure to cycle reliably. Each box contains 20 rounds; full cases ship as 200 rounds across 10 boxes.