Starline .450 Bushmaster Unprimed Rifle Brass, 50-Count

Starline .450 Bushmaster Unprimed Rifle Brass (brand part no. 450BUSHMASTERUP50) gives handloaders 50 unprimed cases per bag for building close-range, big-bore hunting loads for the AR-15 platform. .450 Bushmaster was designed as a close-range big-bore hunting cartridge, and as with most AR cartridge conversions it only requires swapping the upper receiver. With newer bolt-action rifles chambered in it and more states allowing straight-wall cartridges for hunting, demand for quality brass in this caliber has grown, and Starline’s tight tolerances make it a solid choice for repeatable handloads.

Key Specifications

• Caliber: .450 Bushmaster.
• Case length: 1.693–1.697 inches.
• Primer pocket: Small.
• Packed 50 unprimed cases per bag.
• Product type: Rifle brass, built for handloading from scratch.

Frequently Asked Questions

Are these cases primed? No, this is unprimed brass; you’ll need to seat your own primers as part of the loading process.

Does this brass work in both AR-platform and bolt-action .450 Bushmaster rifles? Yes, .450 Bushmaster brass is dimensionally the same regardless of action type, so it works in both AR-platform uppers and bolt-action rifles chambered for the cartridge.

Buy the Starline .450 Bushmaster Unprimed Brass

Start your handloads with genuine Starline brass from our reloading brass selection. Order it from our Lubbock, Texas gun shop for fast, direct shipping.