Description
Hornady Subsonic 7.62x39mm 255gr Sub-X Ammo
Specialized subsonic ammunition engineered for suppressed firearms, featuring a heavy Sub-X bullet designed to expand reliably at low velocities while delivering quiet performance.
Product Overview
Hornady Subsonic 7.62x39mm 255-grain ammunition is meticulously engineered to provide exceptional performance when paired with a firearm suppressor. The Sub-X (Subsonic – Expanding) projectile features a lead core with long grooves in its jacket, combined with a patented Flex Tip insert that initiates positive expansion at low velocities.
Leaving the muzzle at 1,050 fps and generating 624 ft-lbs of energy, this load stays well below the speed of sound to eliminate the sonic crack. Each box contains 20 rounds of reloadable brass cases loaded with clean-burning, specialized powders optimized for short barrels and suppressed systems.
Technical Specifications
| Brand / Manufacturer | Hornady |
| Caliber | 7.62x39mm |
| Bullet Weight | 255 Grain |
| Bullet Type | Sub-X (Subsonic – Expanding) with Flex Tip |
| Muzzle Velocity | 1,050 fps |
| Muzzle Energy | 624 ft-lbs |
| Casing Material | Reloadable Brass |
| Primer Type | Boxer, Non-Corrosive |
| Primary Use | Suppressed Shooting, Hunting, and Pest Control |
| Rounds per Box | 20 Rounds |
Key Benefits
- Sub-X Technology: Heavy bullet weight combined with a specially designed hollow point and Flex Tip ensures reliable expansion at low velocities.
- Suppressed Performance: Muzzle velocities under the sound barrier eliminate the supersonic crack, maximizing the effectiveness of sound suppressors.
- Consistent Accuracy: Loaded with strict quality controls to ensure dependable cycling, uniform pressures, and accurate grouping.
- Reloadable Brass Cases: High-grade brass construction featuring Boxer primers for shooters who reload.
Compatibility & Usage Notes
Designed specifically for rifles and carbines chambered in 7.62x39mm, especially those equipped with a sound suppressor. Ideal for close-range pest control, hog hunting, and stealth shooting applications.
Frequently Asked Questions
Will this ammunition cycle semi-automatic rifles like an AK or SKS?
Powders are chosen to optimize performance and backpressure, but functionality in semi-automatic platforms can vary depending on the specific gas system, barrel length, and suppressor used.
Are the brass cases reloadable?
Yes, Hornady Subsonic ammo uses standard Boxer-primed brass cases that are fully reloadable.
