Hornady Unprimed Rifle Brass in 6mm ARC (brand part no. 86287) gives handloaders a dependable case for one of the most popular modern AR-platform cartridges built for reaching out to distance from a semi-auto rifle. Hornady holds tight tolerances on wall thickness, weight, and internal capacity across every case, allowing proper bullet seating in both the case neck and the chamber rather than fighting inconsistent tension from round to round. That consistency matters for 6mm ARC shooters chasing both long-range accuracy and reliable function through a gas gun. The brass ships unprimed, so the reloader controls primer selection and load development from the start.

Key Specifications

• Chambered for 6mm ARC, matched to the cartridge’s exact case dimensions.
• Ships unprimed, giving the reloader full control over primer choice.
• Packaged 50 cases per box for a standard reloading batch.
• Ships at approximately 0.88 lb per box.
• Classified as rifle brass, built to Hornady’s precision reloading standard.
• Holds uniform wall thickness case to case, a measurable consistency Hornady controls at the factory.
• Maintains consistent internal case capacity, so charge weights and pressures stay repeatable across a batch.
• Supports proper bullet seating in both the case neck and the chamber, not just one or the other.

Frequently Asked Questions

Is this brass primed? No, it ships unprimed so the reloader can select their own primers.

How many cases come in a box? 50 cases per box.

What platform is 6mm ARC designed for? A modern AR-platform cartridge built for long-range accuracy from a semi-auto rifle.

See more reloading components from Hornady in our reloading brass category.

Buy the Hornady Unprimed Rifle Brass, 6mm ARC, 50-Count

Reaching out to distance from an AR platform depends on brass that behaves consistently through a semi-auto action, and this box delivers that. Order it from our Lubbock, Texas gun shop for fast, direct shipping.