SIERRA BULLETS115705090
Sierra Tipped MatchKing (TMK) Bullets - 30 Caliber (.308 Diameter), 155 Grain, Polymer Tip Boat Tail$275.04
Availability: In Stock
The Sierra Tipped MatchKing (TMK) 300 AAC Blackout 125-grain bullet is purpose-built for AR platform shooters who demand precision from their subsonic loads. This flat-based .308-diameter round pairs the proven accuracy DNA of Sierra's MatchKing line with a polymer tip that boosts ballistic coefficient, making it an excellent choice for match competition, precision rifle work, and dedicated subsonic shooting. If you're running 300 Blackout through an AR or bolt gun and want consistent, tight-group performance, the TMK delivers the accuracy foundation Sierra is known for.
The polymer tip isn't just window dressing—it's engineered to improve aerodynamics across the velocity band typical of 300 Blackout loads. The jacket itself was designed to handle mid-level .30 caliber cartridge velocities, so you're not confined to subsonic work alone if you want to experiment. That said, these are match and target bullets first. While some shooters do use MatchKing and Tipped MatchKing bullets for varmint work, they're not optimized for the kind of explosive expansion you'd want in a hunting round; Sierra makes purpose-built hunting and varmint bullets if that's your goal.
Reloaders appreciate Sierra's attention to consistency and their track record for accuracy—MatchKing and TMK bullets have set records across precision shooting disciplines. Whether you're fine-tuning loads for a competition rig, building subsonic ammo for your 300 Blackout pistol, or loading for a bolt-action .30 caliber, these 125-grain rounds are a solid foundation for tight groups and predictable ballistics.
| Caliber / Diameter | .308 / .30 Caliber |
| Weight | 125 Grains |
| Bullet Style | Tipped MatchKing (TMK) |
| Base Type | Flat Base |
| Ballistic Coefficient | .343 @ 2580 fps and above; .338 @ 2580–2180 fps; .332 @ 2180 fps and below |
| Design Application | .300 AAC Blackout (AR and bolt action) |
| Manufacturer | Sierra Bullets |
Yes. The 125-grain Tipped MatchKing is specifically designed as a flat-based bullet for the .300 AAC Blackout cartridge on the AR platform.
The Tipped MatchKing adds a polymer tip to boost ballistic coefficient and improve aerodynamics compared to the standard MatchKing design. The TMK expands the range of lightweight .30 caliber offerings for AR and bolt-action shooters.
MatchKing and Tipped MatchKing bullets are not recommended for most hunting applications. While some shooters use them for varmint work, they won't provide the reliable, explosive expansion that Sierra's purpose-built hunting and varmint bullets are designed for. If hunting is your goal, consider Sierra's Hornet Blitz or Varminter options instead.
The jacket is designed to handle mid-level .30 caliber cartridge velocities. The ballistic coefficient varies by velocity: .343 at 2580 fps and above, .338 between 2580 and 2180 fps, and .332 at 2180 fps and below.
SKU: 115697196 • Width: 4.6in • Height: 3.5in • Depth: 6.1in • Weight: 9.23oz
Availability: In Stock
The Sierra Tipped MatchKing (TMK) 300 AAC Blackout 125-grain bullet is purpose-built for AR platform shooters who demand precision from their subsonic loads. This flat-based .308-diameter round pairs the proven accuracy DNA of Sierra's MatchKing line with a polymer tip that boosts ballistic coefficient, making it an excellent choice for match competition, precision rifle work, and dedicated subsonic shooting. If you're running 300 Blackout through an AR or bolt gun and want consistent, tight-group performance, the TMK delivers the accuracy foundation Sierra is known for.
The polymer tip isn't just window dressing—it's engineered to improve aerodynamics across the velocity band typical of 300 Blackout loads. The jacket itself was designed to handle mid-level .30 caliber cartridge velocities, so you're not confined to subsonic work alone if you want to experiment. That said, these are match and target bullets first. While some shooters do use MatchKing and Tipped MatchKing bullets for varmint work, they're not optimized for the kind of explosive expansion you'd want in a hunting round; Sierra makes purpose-built hunting and varmint bullets if that's your goal.
Reloaders appreciate Sierra's attention to consistency and their track record for accuracy—MatchKing and TMK bullets have set records across precision shooting disciplines. Whether you're fine-tuning loads for a competition rig, building subsonic ammo for your 300 Blackout pistol, or loading for a bolt-action .30 caliber, these 125-grain rounds are a solid foundation for tight groups and predictable ballistics.
| Caliber / Diameter | .308 / .30 Caliber |
| Weight | 125 Grains |
| Bullet Style | Tipped MatchKing (TMK) |
| Base Type | Flat Base |
| Ballistic Coefficient | .343 @ 2580 fps and above; .338 @ 2580–2180 fps; .332 @ 2180 fps and below |
| Design Application | .300 AAC Blackout (AR and bolt action) |
| Manufacturer | Sierra Bullets |
Yes. The 125-grain Tipped MatchKing is specifically designed as a flat-based bullet for the .300 AAC Blackout cartridge on the AR platform.
The Tipped MatchKing adds a polymer tip to boost ballistic coefficient and improve aerodynamics compared to the standard MatchKing design. The TMK expands the range of lightweight .30 caliber offerings for AR and bolt-action shooters.
MatchKing and Tipped MatchKing bullets are not recommended for most hunting applications. While some shooters use them for varmint work, they won't provide the reliable, explosive expansion that Sierra's purpose-built hunting and varmint bullets are designed for. If hunting is your goal, consider Sierra's Hornet Blitz or Varminter options instead.
The jacket is designed to handle mid-level .30 caliber cartridge velocities. The ballistic coefficient varies by velocity: .343 at 2580 fps and above, .338 between 2580 and 2180 fps, and .332 at 2180 fps and below.
SKU: 115697196 • Width: 4.6in • Height: 3.5in • Depth: 6.1in • Weight: 9.23oz