Veloctiy: 1050 FPS
Kinetic Energy: 735 ft-lbs
8.6 Blackout 300 gr subosonic Sierra Match King Hollow Point Boat Tail rounds in new Starline brass. This round is in our product lineup in an effort to bring you 8.6 Blackout ammo at an economical price point.
The 8.6 Blackout (8.6 BLK) is the next evolution in high-performance ammunition, designed by Kevin Brittingham and his team at Q LLC. Building on the success of the .300 Blackout, the 8.6 BLK was developed to provide superior energy, range, and versatility, especially for AR-10 platforms. This groundbreaking cartridge applies the design principles of the .300 BLK to a larger, .338-caliber bullet, offering dramatically enhanced performance while maintaining compatibility with .308-sized platforms. A simple barrel swap is all that’s required to convert AR-10s and .308 Winchester bolt guns to 8.6 BLK, making the transition seamless.
What sets the 8.6 BLK apart is its ability to fire a wide range of bullet weights, from 160 to 210 grains at supersonic speeds, and 280 to 350 grains at subsonic velocities. The cartridge excels in short-barrel rifles and is highly effective in suppressed applications, making it ideal for hunters and tactical shooters alike. The supersonic rounds deliver up to 2,400 feet per second and impressive energy transfer, while the heavy subsonic bullets deliver tremendous stopping power, with energy exceeding 830 ft-lbs.
5 Reviews Hide Reviews Show Reviews
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300 gr. SMK 8.6 BLK
Great company to work with! Fast shipping and an extremely well made round. Very consistent grouping and crazy quiet.
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8.6 subsonic ammo
I was looking for a subsonic round that paired well with my supressor, after shooting the Sierra Match King and Gorilla 8.6 subsonic ammo back to back I was impressed with both.. However I believe that the Sierra match was just a bit quieter. I WILL be ordering more..
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8.6 subsonic ammo
I have recently gotten a semi-auto 8.6, however, everywhere I went or looked, I could not find or get any 8.6 ammo, even on the internet (all either out of stock, or backordered). I found Phantom Defense on the internet, they had several options in stock, and various price points. I placed an order, within 3-5 days I had ammo in hand. I was very pleased to have been able to make a selection and finally get to shoot my new rifle. Easy to order and great response time on getting product out to their customers. I will be placing more orders very soon..
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Good Ammo
Git these for my first rounds through my 8.6. Perfor.ance was consistent and they cycled great in my 12.5" barrel. I will likely stay with these even if they cost a bit more.
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Reliable and accurate
Had no issues with feeding in my AICS mags and was able to manage a 1.2moa group at 100yd. More than enough to take out hunting
