Last reviewed: 2026-04-19 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
Subsonic 308 Winchester ammo from Sellier & Bellot pairs a 200-grain Sierra MatchKing Jacketed Hollow Point Boat Tail with a load tuned to 1000 fps — keeping the bullet beneath the speed of sound to eliminate transonic turbulence and maintain consistency at the target. For suppressed rifle work or precision applications where sonic crack is undesirable, this load delivers match-grade accuracy without the supersonic signature.
Load Profile
The Sierra MatchKing HPBT carries a 0.565 G1 ballistic coefficient and 0.301 sectional density — engineering traits that preserve velocity and resist wind deflection even at subsonic speeds. The thin jacket and tight dimensional tolerances deliver the consistency competitive shooters expect from the MatchKing line. Sellier & Bellot seats this bullet over a powder charge optimized for 1000 fps muzzle velocity, generating 444 foot-pounds of energy — sufficient for steel targets and paper at extended subsonic distances. Boxer-primed brass cases support hand-loading for shooters refining subsonic recipes.
Specs at a Glance
| Spec | Value |
|---|---|
| Caliber | 308 Winchester |
| Bullet weight | 200 grains |
| Bullet type | Sierra MatchKing Jacketed Hollow Point Boat Tail |
| Muzzle velocity | 1000 fps |
| Muzzle energy | 444 ft-lbs |
| G1 ballistic coefficient | 0.565 |
| Sectional density | 0.301 |
| Rounds per box | 20 |
| Case | Brass |
| Primer | Boxer |
| Corrosive | No |
| Reloadable | Yes |
| Lead-free | No |
| Velocity rating | Subsonic |
| Intended use | Range & Target |
| Manufacturer | Sellier & Bellot |
This load fits within the broader subsonic 308 ammo category — cartridges engineered to keep bullets beneath Mach 1 for suppressed or noise-sensitive shooting environments.
Who It’s For
Long-range precision shooters working suppressed bolt-actions or semi-autos gain the dual benefit of no sonic crack and minimal report when paired with a quality can. Competitive PRS or NRL22X shooters running subsonic divisions appreciate the MatchKing’s proven track record. Handloaders refining subsonic recipes start with factory brass and published velocity data as a baseline. Hunters pursuing close-range or noise-restricted game find the heavy bullet retains energy at modest distances — though terminal performance differs from expanding hunting designs.
Safe Handling & Compliance
Federal law requires purchasers to be at least 18 years old for rifle ammunition. Ammunition cannot be shipped to certain states, counties, and cities — review our ammunition shipping restrictions before ordering. Store ammunition in a cool, dry location away from heat sources and out of reach of unauthorized users.
- Observe the four rules of safe firearm handling at all times — treat every firearm as loaded, never point at anything you are not willing to destroy, keep your finger off the trigger until ready to fire, be certain of your target and what lies beyond it.
- Verify current ammunition and firearm regulations in your state and locality — restrictions on caliber, magazine capacity, and possession vary by jurisdiction.
- This ammunition contains lead components — per California Proposition 65, exposure to lead during shooting or handling can cause reproductive harm. Wash hands after range sessions and before eating.
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