Atomic Ammunition Match Subsonic 308 Winchester 175 Grain Sierra MatchKing JHP ammunition is engineered for precision shooters who require consistent, quiet performance. This load pairs a proven Sierra projectile with a subsonic powder charge for minimal report and reliable function in suppressed platforms. Since we began carrying it in late 2024, it has become a consistent reorder item for our customers seeking quality subsonic .308.
Stand-Out Features
- Sierra MatchKing Bullet: Features the 175 grain Sierra MatchKing Jacketed Hollow Point (BTHP), known for its exceptional ballistic coefficient and consistent accuracy.
- Subsonic Performance: Loaded to remain below the sound barrier, reducing muzzle report and eliminating the sonic crack, ideal for suppressed shooting.
- Reliable Function: In our testing, this ammunition has fed reliably in a variety of firearms, handling well with both brass and steel case actions.
- Match-Grade Consistency: Atomic Ammunition focuses on tight tolerances for velocity and pressure, contributing to repeatable point of impact.
- Bulk Packaging: Supplied in a convenient 100-round box, providing ample quantity for range sessions or training.
Technical Data
| Caliber | .308 Winchester (7.62x51mm NATO) |
| Bullet Type | 175 Grain Sierra MatchKing Jacketed Hollow Point Boat Tail (BTHP) |
| Muzzle Velocity | Subsonic (< 1100 fps) |
| Muzzle Energy | Approx. 470 ft-lbs |
| Quantity | 100 Rounds |
| Primer Type | Boxer, Non-Corrosive |
| Case Material | Brass, Reloadable |
| Weight (measured) | 7.6 oz |
Your Questions Answered
Is this ammunition supersonic or subsonic?
This is a dedicated subsonic load. It is engineered to maintain a muzzle velocity below approximately 1100 feet per second to stay under the sound barrier, making it suitable for use with suppressors without the disruptive sonic crack.
Will this ammunition cycle a semi-automatic rifle?
While subsonic ammunition can sometimes present cycling challenges in gas-operated systems, this load has demonstrated reliable feeding in our testing. Function can depend on your specific firearm’s gas system, buffer weight, and suppressor use. It is always advisable to test a small quantity for function in your specific platform.
Is the brass reloadable?
Yes. This ammunition uses boxer-primed, non-corrosive brass cases that are suitable for reloading by experienced handloaders who follow safe reloading practices and data for subsonic loads.
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