Hornady SUB-X Subsonic .300 AAC Blackout ammunition loads a 190‑grain Sub‑X expanding bullet engineered for reliable expansion at subsonic velocities. It is designed for use in modern sporting rifles chambered in .300 AAC Blackout where subsonic performance is required. The load is listed with a muzzle velocity of approximately 1050 feet per second and is produced in retail packaging suitable for range or field use.
Packaging
Box: Sold per box containing 20 rounds.
Case: Available by the case; one case contains 10 boxes (200 rounds total). A case quantity is achieved by ordering the required number of boxes to reach the case total.
Key Specifications
- The cartridge is .300 AAC Blackout.
- The bullet weight is 190 grains.
- The bullet type is Jacketed Hollow Point (Sub‑X).
- The product line is Sub‑X (Subsonic).
- The listed muzzle velocity is 1050 fps.
- The listed muzzle energy is 465 ft lbs.
- The ballistic coefficient (G1) is listed as 0.437.
- The retail package contains 20 rounds per box.
- The case total is 200 rounds (10 boxes per case).
- The case material is listed as Brass.
Engineered for consistent subsonic performance, Hornady’s Sub‑X load is intended for shooters who require controlled, reliable expansion at lower velocities while maintaining accuracy. The 20‑round box and 10‑box case option provide practical packaging for individual shooters and inventory-minded users alike.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
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