.300 BLACKOUT

Once-Fired 300 BLK Brass: Premium Quality, Affordable Prices

If you’re a shooting enthusiast looking to reload your own .300 Blackout brass, Diamond K Brass offers the best once-fired brass you can find on the web ammo market. If you order today, your once-fired .300 Blackout brass will ship out by tomorrow and is ready for processing. We also offer a wide variety of brass components, bullets and other once-fired ammo reloading supplies.

.300 ACC BLACKOUT

Diamond K Brass only uses the highest quality brass and supplies for our .300 ACC Blackout once-fired rounds of ammunition. Depending on what online retailer you choose, there’s a chance that you may end up with asymmetric, uneven brass casings that can lead to gun jams and other malfunctions.

The most obvious reason to choose once-fired brass is the fact that you can save big when you’re ordering a box of bulk ammo reloading supplies. Everyone knows about the increasing price of loaded ammo due to the nationwide ammo shortage. If you choose Diamond K Brass once-fired  brass, you can get bags of 100, 500 or more for far less than you’ll be able to get a box of new and overpriced ammo at your local gun shop.

Our .300 ACC Blackout brass is tumbled polished and ready to be deprimed and resized.  We also offer Processed ready to load Blackout brass.  Ready to ship.

Browse our selection below to find the ammunition brass you need, or feel free to check out the rest of our inventory across the site.