.300 Blackout 115 Chaos HPBT SUPER SONIC

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  • $36.99
  • Regular price $36.99
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300 blackout 115 grain hollow point boat tail SUPER SONIC

The most lethal supersonic .300 blackout ammo on the market. 

Avg. 2150 FPS out of 16” barrel

SD of 9 FPS

 Brass is new ammo inc head stamp due to cup shortages.

The development of this technology was the result of an animal control agency's request for a no lead .300 bullet that would provide extensive wound trauma with little minimal pass through energy. Basically the idea was to burst the bullet into numerous particles at a predetermined depth creating many wounds and a large temporary cavity with shot placement at or near the central nervous system. The agency had tried copper matrix frangible rounds and found the penetration depth and particle size were less than what was require for proper terminal performance.

The bullet is designed to penetrate to a specific depth and to fracture as the internal hydraulic pressure exceeds the hoop strength of the nose design.  At the time of fracture, a massive energy spike is released as the particles break away and radiate outward from the initial trajectory path.  This energy spike and resulting temporary cavity sends a shock wave through the animal's circulatory and nervous systems immediately shutting down the functioning of these systems.

  • Many wound channels resulting in extensive damage
  • CNC machined from solid copper or brass, not formed or swaged
  • Exceptional accuracy from the advanced manufacturing process
  • A separate base for penetration along the original trajectory
  • No lead designs for agencies requiring green projectiles


This .300 blackout will cycle in suppressed and non suppressed rifles.

The gas port may need to be turned down on a suppressed gun to cycle correctly. 

Due to component shortages there will be outages for quite some time.
We are working on solutions but not a process that’s overnight.


Some good articles of why ammo is gone and so expensive.

Click here  article in Guns and Ammo magazine

Click here article from Recoil magazine 

Click here  article on primer shortages Guns and Ammo magazine


Customer Reviews

Based on 3 reviews
Rich Rumpke

Great ammo Thank you for letting me know it was back in stock

jonathan bellamy
Tried them all, I'm here to claim.

We have tried many ammo manufactures and the is only just a few that really hit the bullseye with us, Underwood, Federal, Hornady, Speer, and Grind Hard. when you compare Price, Reliability, Accuracy, Quality, Friendly Employees who care for the customers, and just overall looks of the ammo and packaging, Grind Hard is at the very top and # 1 in our book!

Hog hammers!

These 115s are very accurate and quickly LETHAL on hogs. In my experience, neck/medulla shots they are DRT. Heart/lung shots have all died within 20 yards, most of them are DRT. Best overall performing 300blk hunting round I have used, as far as lethality. Highly recommend!!!