Starline 300 Blackout Unprimed Brass Cases (100 Count)
Starline unprimed brass cases for 300 Blackout ammunition reloading. 100 cases per bag. Perfect for AR-15 platform rifles and pistols, or bolt-action rifles.
Premium Reloading Brass for 300 Blackout
Starline's 300 Blackout unprimed brass cases give you the foundation for consistent, reliable ammunition. Each bag contains 100 cases ready for your reloading press.
About the 300 Blackout Cartridge
The .300 Blackout is a purpose-built cartridge designed around subsonic performance in suppressed firearms. Based on a shortened 5.56x45mm case necked to .30 caliber, it delivers effective power at subsonic velocities while maintaining reliability in semi-automatic platforms.
Versatile Platform Compatibility
- AR-15 Platform: Simply swap the barrel to convert from 5.56 to .300 Blackout—no other modifications required
- Pistols: Ideal for short-barreled AR pistols and specialized platforms
- Bolt-Action Rifles: Growing number of precision rifles now chamber this cartridge
- Single-Shot Rifles: Excellent choice for specialized hunting and target applications
Why Choose Starline Brass
Starline brass is known for consistent quality and reliable performance. These unprimed cases allow you to load ammunition tailored to your specific firearm and shooting requirements, whether you're hunting, target shooting, or running suppressed systems.
