8.6 Blackout vs 375 Raptor: Two Powerhouses for Modern Shooting Needs

Introduction to 8.6 Blackout and 375 Raptor

The evolution of rifle cartridges has driven innovation in ballistic performance, leading to two standout contenders: the  8.6 Blackout and the 375 Raptor. These cartridges cater to shooters looking for exceptional versatility, power, and compatibility with modern platforms like AR-10s and bolt-action rifles. While both rounds excel in specific applications, Phantom Defense recognizes the unique benefits of each and proudly provides ammunition options for both. Here’s how these two powerhouse cartridges compare and why the 8.6 Blackout offers unparalleled versatility and modern innovation.

8.6 Blackout: Innovation Meets Versatility

Developed by Kevin Brittingham and the team at Q LLC, the 8.6 Blackout builds on the success of the .300 Blackout, incorporating a larger .338-caliber bullet for dramatically enhanced performance. Designed to work seamlessly with AR-10 platforms, the 8.6 BLK only requires a simple barrel swap to convert existing AR-10s or .308 bolt guns, making the transition easy and cost-effective.

The 8.6 BLK excels due to its wide range of applications and performance capabilities:

• Supersonic Loads: Power and Speed

  With bullet weights ranging from 160 to 250 grains, these loads achieve speeds of up to 2,400 FPS, delivering exceptional energy transfer for tactical and hunting scenarios.

• Subsonic Loads: Quiet and Powerful

  Heavier projectiles, ranging from 280 to 350 grains, provide unmatched stopping power at subsonic velocities, with energy exceeding 830 ft-lbs. These are ideal for suppressed platforms and close-quarters engagements.

Optimized for Short-Barrel Rifles

The cartridge shines in short-barrel rifles, with its 1:3 rifling twist rate ensuring stability and exceptional terminal performance. Lighter .338-caliber bullets offer better ballistic coefficients (BCs) compared to heavier .375 projectiles, which is critically important in short-barrel rifles when using moderate to high powder charges. Improved BCs help maintain velocity, reduce drag, and optimize energy retention, allowing for longer effective ranges even with shorter barrels. This makes the 8.6 Blackout an ideal choice for modern shooters who prioritize versatility and precision.

375 Raptor: A Heavyweight Challenger

The 375 Raptor, designed by Arne Brennan, takes a different approach by necking up .308 Winchester brass to accept .375-caliber projectiles. The goal was to create a cartridge that could handle both supersonic and subsonic loads while maintaining compatibility with AR-10 and bolt-action platforms. Like the 8.6 Blackout, it requires only a barrel change to function in .308 platforms.

The 375 Raptor delivers impressive performance in both configurations:

• Supersonic Loads: Heavy-Hitting Performance

  Bullet weights from 175 to 350 grains reach speeds of 2,100 to 2,675 FPS, delivering energy levels between 2,900 and over 3,700 ft-lbs. These loads are capable of taking down the largest game in North America and even African game like Cape Buffalo.

• Subsonic Loads: Massive Energy Transfer

  Heavier bullets from 350 to 450 grains perform exceptionally well at velocities around 1,050 FPS. A 400-grain subsonic load generates more energy at 100 yards than a 300 Blackout delivers at the muzzle, making it a heavyweight contender for close-range engagements.

Bullet Variety and Customization

The 375 Raptor benefits from the availability of hundreds of .375 caliber projectiles, thanks to its compatibility with bullets used in cartridges like the 375 H&H Magnum. Its efficient powder burn and ability to perform well in short barrels make it a compelling option for big-game hunters and enthusiasts seeking a heavy-hitting round. One drawback is that many shooters have reported issues with failure to feed due to the bullet design on these .375 caliber projectiles. For every one shooter who reports issues there is another who has never had a failure to feed in their platform of choice. 

Comparison: 8.6 Blackout vs 375 Raptor

Why Phantom Defense Offers Both

At Phantom Defense, we see the value and unique use cases for both the 8.6 Blackout and the 375 Raptor. Each cartridge serves distinct purposes and appeals to different types of shooters:

• The 375 Raptor is a fantastic option for those who prioritize big-game hunting and want the flexibility to fire massive subsonic bullets with unparalleled energy transfer. Its compatibility with a wide range of .375-caliber projectiles ensures plenty of customization options for reloaders.
• The 8.6 Blackout represents the next step in modern cartridge innovation, with better ballistic coefficients on lighter .338 bullets, making it the superior choice for short-barrel rifles where velocity retention and reduced drag are essential.

Firearms Compatibility: Why 8.6 Blackout Stands Out

While the 375 Raptor is an incredible cartridge, it often requires custom firearm builds or extensive modifications to achieve optimal performance. In contrast, the 8.6 Blackout benefits from firearms specifically designed to maximize its capabilities, such as Q’s Fix and BoomBox. These platforms are engineered to take full advantage of 8.6 BLK’s fast twist rates and efficient powder burn, providing shooters with a seamless and high-performing experience right out of the box.

Additionally, the 1:3 twist rate of the 8.6 Blackout stabilizes heavy subsonic bullets and maximizes the expansion and terminal performance of lighter supersonic rounds, offering greater flexibility for tactical and hunting applications alike.

The Verdict: What's Right for You?

Both the 8.6 Blackout and the 375 Raptor are exceptional cartridges with their own strengths:

When to Choose 375 Raptor

• If you’re a hunter or reloader looking for a cartridge that delivers massive energy and works across a wide range of .375-caliber projectiles, the 375 Raptor is a powerful and versatile choice.
  

When to Choose 8.6 Blackout

• If you value modern innovation, superior BCs for lighter bullets, and compatibility with cutting-edge firearms, the 8.6 Blackout stands out as the more advanced option for short-barrel platforms and tactical versatility.

Phantom Defense is proud to offer ammunition for both cartridges, ensuring that shooters have access to the best tools for their specific needs. Whether you’re pursuing big game, engaging in tactical scenarios, or optimizing your short-barrel rifle, the 8.6 Blackout and 375 Raptor represent the pinnacle of performance and innovation in modern shooting.