Hornady Subsonic .300 AAC Blackout 190 gr Sub‑X – 20 Rounds

Description

Hornady Subsonic ammunition in .300 AAC Blackout pairs the 190 grain Sub‑X (Subsonic eXpanding) bullet with powders tuned for velocities below the speed of sound. The Sub‑X design uses a Flex Tip insert and long jacket grooves to promote controlled expansion at lower impact speeds while preserving accuracy. This load is intended for suppressed or unsuppressed subsonic applications where reduced report, reliable terminal performance, and consistent feeding are required.

Key Specifications

• The caliber is .300 AAC Blackout.
• The bullet weight is 190 grains.
• The cartridge uses the Sub‑X (Subsonic eXpanding) jacketed hollow point bullet design with a Flex Tip insert.
• The listed muzzle velocity is 1050 fps.
• The reported ballistic coefficient is .437 (G1).
• Each box contains 20 rounds.
• Boxes are packed 10 per case for a case total of 200 rounds.
• The case material is listed as brass.
• The cartridge is specified as centerfire and not reloadable per provided data.
• The product line is identified as Subsonic / Sub‑X.

Engineered for reliable subsonic performance, this Hornady load offers a purpose-built option for suppressed shooting, low-flash operation, and training where reduced report and consistent terminal behavior matter. The Sub‑X bullet construction provides controlled expansion at lower velocities while maintaining accuracy from modern .300 Blackout platforms.