When performance in close quarters matters most, SIG SAUER delivers. Our 120-grain Solid Copper .300 Blackout cartridge is purpose-built for short barrel rifles, maximizing terminal effect and reliability where every inch—and every shot—counts.
- Annealed Copper Tip- Advanced thermal treatment enhances expansion upon impact, delivering devastating terminal performance and consistent energy transfer.
- Optimized for SBRs- Tuned powder charge and projectile design ensure full powder burn and velocity efficiency in barrels as short as 7 inches.
- Barrier Blind Performance- Solid copper construction retains weight through glass, drywall, and light auto sheet metal, making it ideal for tactical and defensive use.
- Lead-Free Confidence- Meets environmental and training requirements without sacrificing performance.
From the breach to the barrel’s edge, this is the .300 BLK redefined.
Specifications:
| SKU |
E300H1-SBR-20 |
| Platform |
Rifle |
| Ammo Application |
Defensive, Hunting |
| Caliber |
300BLK |
| Grain Weight |
120 Grain |
| Qty Per Package |
20 |
| Test Barrel Length (in) |
6.75 ± 1/16 |
| Muzzle Velocity |
1,897 fps |
| Muzzle Energy |
959 ft-lbs |
| Bullet Length |
21.3106 mm |
| Case Type |
Brass |
| Lead Free |
No |
| Staked Primer |
No |