
Availability: In Stock
Building precision rifle ammunition starts with quality brass, and Hornady unprimed rifle cartridge cases in .300 Blackout give reloaders the foundation for consistent, reliable rounds. Whether you're handloading for subsonic suppressed shooting, hunting, or precision rifle work, starting with properly manufactured cases matters. This 4000-count box provides serious shooters and reloaders with enough brass to develop loads, test loads, and keep shooting without constantly resourcing—a real advantage for those running high round counts through a .300 Blackout platform.
Hornady's case manufacturing process emphasizes uniformity across the lot. The company measures wall concentricity closely and tests cases through pressure calibration to ensure consistent expansion during firing. This attention to consistency translates to tighter velocity spreads, more predictable pressure curves, and better group potential at distance or on steel. When you're forming loads for a cartridge like the .300 Blackout—which demands precision to perform well both subsonic and supersonic—that uniformity matters.
Unprimed brass gives you complete control over your reloading process: you choose the primer, powder charge, and bullet to match your specific rifle, barrel, and intended use. These cases arrive ready for inspection, cleaning (if desired), and loading. The 4000-count quantity suits both the casual reloader building a winter's worth of hunting ammo and the serious competitor or suppressed-rifle enthusiast who cycles through brass regularly.
| Caliber | .300 Blackout |
| Quantity | 4000 cases |
| Condition | Unprimed |
| Brand | Hornady |
| Type | Rifle Cartridge Cases |
Unprimed means the cases come without primers installed. You'll add the primer yourself during the reloading process, allowing you to select the specific primer type (small rifle, large rifle, etc.) that matches your load requirements and rifle.
This quantity is ideal for dedicated .300 Blackout shooters—hunters, suppressed-rifle enthusiasts, and handloaders who shoot frequently and want to build a consistent supply of ammunition. It's also practical for range shooters, competitors, and those developing multiple loads for testing.
Hornady measures wall concentricity tightly, monitors weight and internal capacity uniformity, and runs cases through pressure calibration testing to ensure consistent expansion during firing. This quality control helps reloaders achieve tighter velocity and pressure spreads.
The provided facts describe the initial product specifications and manufacturing quality. Consult Hornady's reloading manual or website for guidance on case longevity and number of safe reloads per caliber and load type.

SKU: 167523531 • Width: 10in • Height: 9.75in • Depth: 13.75in • Weight: 47.21oz





Availability: In Stock
Building precision rifle ammunition starts with quality brass, and Hornady unprimed rifle cartridge cases in .300 Blackout give reloaders the foundation for consistent, reliable rounds. Whether you're handloading for subsonic suppressed shooting, hunting, or precision rifle work, starting with properly manufactured cases matters. This 4000-count box provides serious shooters and reloaders with enough brass to develop loads, test loads, and keep shooting without constantly resourcing—a real advantage for those running high round counts through a .300 Blackout platform.
Hornady's case manufacturing process emphasizes uniformity across the lot. The company measures wall concentricity closely and tests cases through pressure calibration to ensure consistent expansion during firing. This attention to consistency translates to tighter velocity spreads, more predictable pressure curves, and better group potential at distance or on steel. When you're forming loads for a cartridge like the .300 Blackout—which demands precision to perform well both subsonic and supersonic—that uniformity matters.
Unprimed brass gives you complete control over your reloading process: you choose the primer, powder charge, and bullet to match your specific rifle, barrel, and intended use. These cases arrive ready for inspection, cleaning (if desired), and loading. The 4000-count quantity suits both the casual reloader building a winter's worth of hunting ammo and the serious competitor or suppressed-rifle enthusiast who cycles through brass regularly.
| Caliber | .300 Blackout |
| Quantity | 4000 cases |
| Condition | Unprimed |
| Brand | Hornady |
| Type | Rifle Cartridge Cases |
Unprimed means the cases come without primers installed. You'll add the primer yourself during the reloading process, allowing you to select the specific primer type (small rifle, large rifle, etc.) that matches your load requirements and rifle.
This quantity is ideal for dedicated .300 Blackout shooters—hunters, suppressed-rifle enthusiasts, and handloaders who shoot frequently and want to build a consistent supply of ammunition. It's also practical for range shooters, competitors, and those developing multiple loads for testing.
Hornady measures wall concentricity tightly, monitors weight and internal capacity uniformity, and runs cases through pressure calibration testing to ensure consistent expansion during firing. This quality control helps reloaders achieve tighter velocity and pressure spreads.
The provided facts describe the initial product specifications and manufacturing quality. Consult Hornady's reloading manual or website for guidance on case longevity and number of safe reloads per caliber and load type.
SKU: 167523531 • Width: 10in • Height: 9.75in • Depth: 13.75in • Weight: 47.21oz
