Description
Alpha Munitions has earned its reputation among precision reloaders by doing one thing really well: making brass that holds tight tolerances pass after pass. This 8.6 Blackout rifle brass carries that same pedigree into one of the most interesting cartridges to hit the scene in years. If you've got a rifle chambered in 8.6 BLK and you're tired of chasing factory ammo, loading your own with Alpha brass is the way to get the most out of it.
The 8.6 Blackout is built on a shortened 6.5 Creedmoor case necked up to run a .338 caliber projectile. That design makes it a straightforward caliber conversion for .308 Winchester and AR-10 platforms, since the case head and bolt face match up with 6.5 Creedmoor. It's a dual-purpose round too, capable of pushing a 160 to 225 grain bullet at supersonic speeds or sending a heavy 285 to 350 grain pill downrange subsonic for quiet suppressed work.
What Sets This Alpha 8.6 BLK Brass Apart
Every case is made using Alpha's Optimized Case Design, or OCD, paired with their optimized case head technology. The goal is consistent internal case capacity, uniform neck tension, and a case that's harder through the body but softer at the neck and shoulder for better forming and longer life. The reinforced head is engineered to extend primer pocket life, which matters a lot when you're running the higher pressures and velocities this cartridge is known for.
Primer Size and Packaging on the 8.6 Blackout Brass
This brass is unprimed and set up for large rifle primers, so make sure your load data lines up before you start. It ships in Alpha's signature flip-top plastic case with perforated bi-layer foam, which keeps each piece protected in transit and gives you a handy storage box for your loaded rounds once you've worked up a batch. Made in the USA and ready for your press, this is the kind of brass that rewards careful load development with repeatable results.
Key Specifications
- Manufacturer: Alpha Munitions
- Cartridge: 8.6 Blackout
- Case Material: Brass
- Primer Size: Large Rifle
- Condition: Unprimed, new
- Quantity: 100 per box
- Case Design: Optimized Case Design (OCD) with optimized case head technology
- Country of Origin: Made in USA
- Manufacturer Part Number: AM86BLK
- UPC: 616612670410
What’s Included
- 100 pieces of unprimed Alpha Munitions 8.6 Blackout brass
- Alpha Munitions flip-top plastic storage case with perforated bi-layer protective foam
Frequently Asked Questions
What primer size does this 8.6 Blackout brass take?
This Alpha Munitions 8.6 Blackout brass is set up for large rifle primers. It ships unprimed, so you'll prime it yourself during your reloading process. Double check your load data against the large rifle primer spec before you get started.
Is this brass new or once-fired?
It's factory new, unprimed brass straight from Alpha Munitions. Each piece is ready for your standard prep and load development, so you're starting with fresh, consistent cases rather than range pickups.
What rifles will the 8.6 Blackout work in?
The 8.6 Blackout is built on a shortened 6.5 Creedmoor case and shares its case head and bolt diameter, which makes it a clean conversion for AR-10 and .308 Winchester platforms with a barrel swap. It also runs in bolt-action rifles chambered for the cartridge. Because it shares the 6.5 Creedmoor and .308 case head, it feeds from standard magazines without losing capacity.
Can I load both supersonic and subsonic rounds with this brass?
Yes, that versatility is a big part of the appeal. The 8.6 Blackout can push a 160 to 225 grain bullet at supersonic speeds or run a heavy 285 to 350 grain projectile subsonic for quiet suppressed shooting. Alpha's reinforced case head is designed to hold up to the pressures involved with either load.





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