
Availability: In Stock
The Ultramax 300 Blackout 208-grain ammunition is purpose-built for subsonic shooting in the .300 Blackout cartridge. Whether you're running a suppressed rifle for hunting, home defense, or quiet range work, this 300 Blackout round delivers a heavy 208-grain projectile at subsonic velocities—ideal for maintaining bullet stability and reducing report when paired with a suppressor. Ultramax rounds are brass-cased and reloadable, making them a practical choice for shooters who handload or simply want to manage costs without sacrificing reliability.
The 208-grain bullet weight is the sweet spot for subsonic .300 Blackout performance. It's heavy enough to cycle reliably in most modern AR-pattern rifles while staying below the sound barrier, and it carries significant terminal energy downrange. This makes it suitable for medium-game hunting, tactical training, and precision rifle matches where noise signature matters—or where you simply prefer a softer shooting experience at the range.
Each box contains 200 rounds (20 boxes of 10), so you get a solid supply for serious practice, training, or hunting applications. The brass casing is designed for reloading, which lets savvy shooters stretch their ammunition budget further. If you're running a dedicated .300 Blackout setup and want a reliable, heavy-hitting subsonic load without the premium price tag of match-grade ammo, this is a no-nonsense option.
| Caliber | .300 Blackout (300 BLK) |
| Bullet Weight | 208 grains |
| Bullet Type | TBTAM (Totally Brass Total Copper Metal) |
| Casing | Brass |
| Rounds Per Box | 200 (20 packs of 10) |
| Manufacturer | Ultramax Ammunition |
Yes. The 208-grain bullet weight is designed to perform at subsonic velocities, making this load ideal for suppressed rifles where velocity below the sound barrier is desired for noise reduction.
Yes. Ultramax ammunition is brass-cased and designed to be reloadable, allowing you to process and reload the spent casings.
This ammunition is designed for rifles chambered in .300 Blackout, including most modern AR-platform rifles and other bolt-action or semi-automatic firearms in that caliber.
TBTAM stands for Totally Brass Total Copper Metal, indicating the bullet composition used in this round.

SKU: 200189035





Availability: In Stock
The Ultramax 300 Blackout 208-grain ammunition is purpose-built for subsonic shooting in the .300 Blackout cartridge. Whether you're running a suppressed rifle for hunting, home defense, or quiet range work, this 300 Blackout round delivers a heavy 208-grain projectile at subsonic velocities—ideal for maintaining bullet stability and reducing report when paired with a suppressor. Ultramax rounds are brass-cased and reloadable, making them a practical choice for shooters who handload or simply want to manage costs without sacrificing reliability.
The 208-grain bullet weight is the sweet spot for subsonic .300 Blackout performance. It's heavy enough to cycle reliably in most modern AR-pattern rifles while staying below the sound barrier, and it carries significant terminal energy downrange. This makes it suitable for medium-game hunting, tactical training, and precision rifle matches where noise signature matters—or where you simply prefer a softer shooting experience at the range.
Each box contains 200 rounds (20 boxes of 10), so you get a solid supply for serious practice, training, or hunting applications. The brass casing is designed for reloading, which lets savvy shooters stretch their ammunition budget further. If you're running a dedicated .300 Blackout setup and want a reliable, heavy-hitting subsonic load without the premium price tag of match-grade ammo, this is a no-nonsense option.
| Caliber | .300 Blackout (300 BLK) |
| Bullet Weight | 208 grains |
| Bullet Type | TBTAM (Totally Brass Total Copper Metal) |
| Casing | Brass |
| Rounds Per Box | 200 (20 packs of 10) |
| Manufacturer | Ultramax Ammunition |
Yes. The 208-grain bullet weight is designed to perform at subsonic velocities, making this load ideal for suppressed rifles where velocity below the sound barrier is desired for noise reduction.
Yes. Ultramax ammunition is brass-cased and designed to be reloadable, allowing you to process and reload the spent casings.
This ammunition is designed for rifles chambered in .300 Blackout, including most modern AR-platform rifles and other bolt-action or semi-automatic firearms in that caliber.
TBTAM stands for Totally Brass Total Copper Metal, indicating the bullet composition used in this round.
SKU: 200189035
