8.6 Blackout vs 308: Can't Believe The Difference

Published on January 3, 2025
Duration: 13:45

This video provides an expert-level comparison between the 8.6 Blackout and .308 Winchester cartridges, focusing on their supersonic performance through various mediums. The analysis, conducted by an authority in ballistics, highlights significant differences in penetration, terminal ballistics, and projectile behavior. Key takeaways include the 8.6 Blackout's superior performance in tumbling and expansion against softer materials like lumber and water jugs due to its high twist rate, while the .308 Winchester demonstrates more consistent penetration through harder materials like mild steel.

Quick Summary

Expert analysis reveals significant ballistic differences between 8.6 Blackout and .308 Winchester. While .308 offers higher velocity and energy for superior hard material penetration, the 8.6 Blackout's fast twist rate creates extreme RPMs, enhancing terminal ballistics and tumbling effects against softer targets like lumber and water jugs.

Chapters

  1. 00:00Introduction: 8.6 Blackout vs .308 Supersonic
  2. 00:28Lumber Penetration Test
  3. 01:20Ammunition Specifications
  4. 02:34Concrete Paver Test
  5. 04:16Mild Steel Penetration Test
  6. 05:49Optic Showcase: DNT ThermNight
  7. 06:48Chronograph Data Comparison
  8. 07:06Water Jug Test & RPM Effects
  9. 08:39RPM Calculation Explained
  10. 10:14Sand Box Penetration Test

Frequently Asked Questions

How does the 8.6 Blackout compare to the .308 Winchester in terms of penetration?

The .308 Winchester generally shows better penetration through hard materials like 1/4 inch mild steel due to its higher velocity. However, the 8.6 Blackout demonstrates superior terminal ballistics and tumbling effects against softer materials like treated lumber, creating larger wound channels.

What are the key ballistic differences between 8.6 Blackout and .308 Winchester?

The .308 Winchester typically achieves higher muzzle velocity (around 2551 FPS) and energy (around 2428 ft-lbs) with a 168gr bullet. The 8.6 Blackout, with a 210gr bullet, has lower velocity (around 2085 FPS) and energy (around 2027 ft-lbs) but its high twist rate creates extreme RPMs, enhancing terminal performance on softer targets.

What role does twist rate play in the performance of the 8.6 Blackout?

The 8.6 Blackout's fast 1:3 twist rate is crucial for stabilizing its heavier projectiles at high rotational speeds (RPM). This extreme RPM causes significant fragmentation and shredding effects when impacting targets like water jugs, enhancing its terminal ballistics.

Which cartridge is better for steel penetration, 8.6 Blackout or .308 Winchester?

Based on testing against 1/4 inch mild steel, the .308 Winchester proved more effective at penetration. The 8.6 Blackout failed to pass through, likely due to a combination of its lower velocity and the interaction of its high twist rate with the steel plate.

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