Availability: In Stock
HSM Game King 300 Blackout ammunition pairs proven Sierra Pro-Hunter bullets with carefully matched components to deliver reliable terminal performance in a compact, subsonic package. Built for hunters running 300 Blackout rifles—whether for deer, hog, or varmint work—this load brings together decades of Sierra's hunting bullet engineering with HSM's quality assembly. The 125-grain Pro-Hunter bullet is designed to expand consistently on game while maintaining enough structural integrity for straight-line penetration, making it a solid choice for hunters who value accuracy and ethical shot placement over raw velocity.
The 300 Blackout cartridge has earned its place in the modern hunter's arsenal: it's naturally subsonic, quiet from a suppressed rifle, and effective at the ranges where most hunting actually happens. HSM's approach here is straightforward—match the right bullet weight and design to the caliber's ballistic reality, then load it cleanly. You get a 20-round box of ammunition ready to go, no guesswork about whether your rifle and load are properly paired.
If you're shooting 300 Blackout for hunting or serious marksmanship, this ammunition respects both your rifle and your game. The Pro-Hunter bullet profile has proven itself across multiple hunting scenarios, and HSM's reputation for consistent manufacturing means you can rely on these rounds to perform the same way, shot after shot.
| Caliber | 300 Blackout |
| Bullet Weight | 125 grains |
| Bullet Type | Sierra Pro-Hunter |
| Muzzle Velocity | 2200 fps |
| Muzzle Energy | 1344 ft-lbs |
| Rounds Per Box | 20 |
Yes. At 2200 fps, this load is subsonic, making it suitable for use with suppressors and minimizing supersonic crack downrange.
The Sierra Pro-Hunter is engineered for hunting applications, delivering controlled expansion on game animals while maintaining structural integrity for reliable penetration.
Yes. HSM has matched the 125-grain Pro-Hunter load specifically to the 300 Blackout cartridge for hunting use. Always verify that your specific rifle is chambered in 300 Blackout before loading.
Each box contains 20 rounds, ready to load into your magazine or chamber.
SKU: 119717546 • Width: 3.1in • Height: 1.4in • Depth: 6.1in • Weight: 0.79oz
Availability: In Stock
HSM Game King 300 Blackout ammunition pairs proven Sierra Pro-Hunter bullets with carefully matched components to deliver reliable terminal performance in a compact, subsonic package. Built for hunters running 300 Blackout rifles—whether for deer, hog, or varmint work—this load brings together decades of Sierra's hunting bullet engineering with HSM's quality assembly. The 125-grain Pro-Hunter bullet is designed to expand consistently on game while maintaining enough structural integrity for straight-line penetration, making it a solid choice for hunters who value accuracy and ethical shot placement over raw velocity.
The 300 Blackout cartridge has earned its place in the modern hunter's arsenal: it's naturally subsonic, quiet from a suppressed rifle, and effective at the ranges where most hunting actually happens. HSM's approach here is straightforward—match the right bullet weight and design to the caliber's ballistic reality, then load it cleanly. You get a 20-round box of ammunition ready to go, no guesswork about whether your rifle and load are properly paired.
If you're shooting 300 Blackout for hunting or serious marksmanship, this ammunition respects both your rifle and your game. The Pro-Hunter bullet profile has proven itself across multiple hunting scenarios, and HSM's reputation for consistent manufacturing means you can rely on these rounds to perform the same way, shot after shot.
| Caliber | 300 Blackout |
| Bullet Weight | 125 grains |
| Bullet Type | Sierra Pro-Hunter |
| Muzzle Velocity | 2200 fps |
| Muzzle Energy | 1344 ft-lbs |
| Rounds Per Box | 20 |
Yes. At 2200 fps, this load is subsonic, making it suitable for use with suppressors and minimizing supersonic crack downrange.
The Sierra Pro-Hunter is engineered for hunting applications, delivering controlled expansion on game animals while maintaining structural integrity for reliable penetration.
Yes. HSM has matched the 125-grain Pro-Hunter load specifically to the 300 Blackout cartridge for hunting use. Always verify that your specific rifle is chambered in 300 Blackout before loading.
Each box contains 20 rounds, ready to load into your magazine or chamber.
SKU: 119717546 • Width: 3.1in • Height: 1.4in • Depth: 6.1in • Weight: 0.79oz