Hornady Unprimed Brass Rifle Cartridge Cases for .300 Winchester Magnum (part no. 8670) give handloaders a clean starting point for building their own ammunition, sold 50 cases to a box. Hornady treats brass as the foundation of an accurate cartridge, holding these cases to uniform wall thickness, weight, and internal capacity so every charge behaves consistently from case to case. Each lot runs through a pressure calibration test before it reaches the reloading bench.

Key Specifications

• Sized for .300 Winchester Magnum, ready for full-length resizing and priming.
• Sold unprimed, so the reloader controls primer selection from the first firing.
• Packaged 50 cases to a box.
• Held to uniform wall thickness, weight, and internal capacity for consistent powder charges and pressures case to case.
• Each lot is run through a pressure calibration test to ensure uniform case expansion during firing.
• Case dimensions allow proper bullet seating in both the case and the rifle’s chamber.

Frequently Asked Questions

Are these cases primed? No. They are sold unprimed, so you select and seat your own primers.

How many cases come in a box? This listing is packaged 50 cases per box.

Buy the Hornady Unprimed Brass Rifle Cartridge Cases, .300 Winchester Magnum

Order Hornady Unprimed Brass Cases for .300 Winchester Magnum through our reloading brass selection. Order it from our Lubbock, Texas gun shop for fast, insured shipping.