300 Blackout vs 8.6 Blackout: Worse Than Expected

Published on November 1, 2024
Duration: 15:51

This video provides an expert-level comparison of .300 Blackout and 8.6 Blackout calibers, featuring detailed ballistic testing against various materials like lumber, concrete, and steel. The host, demonstrating high technical proficiency, analyzes the performance of both standard and specialized ammunition, including Gorilla Ammunition's solid copper rounds and the impact of fast twist rates on bullet integrity. The comparison highlights the unique capabilities and limitations of each caliber, offering valuable insights for firearms enthusiasts.

Quick Summary

Expert ballistic testing reveals that standard subsonic rounds for both .300 Blackout and 8.6 Blackout have limited penetration against hard barriers like concrete. However, specialized heavy subsonic projectiles in 8.6 Blackout show superior performance. The high RPMs generated by 8.6 Blackout's fast twist rates necessitate solid copper bullets to prevent disintegration.

Chapters

  1. 00:00Introduction & Lumber Test
  2. 03:14Concrete Paver Testing
  3. 04:05CMMG Dissent Mk3 Overview
  4. 04:54Exotic Subsonic Rounds
  5. 06:54Ultradyne UD Chassis Feature
  6. 08:59Mild Steel Testing
  7. 10:56Twist Rate & RPM Discussion
  8. 12:03Water Jug Terminal Ballistics

Frequently Asked Questions

How did .300 Blackout and 8.6 Blackout perform against concrete pavers?

Both .300 Blackout and 8.6 Blackout subsonic rounds showed underwhelming performance against 1.57-inch concrete pavers, primarily shattering the pavers without significant penetration. Specialized heavy subsonic rounds in 8.6 Blackout, however, demonstrated better penetration capabilities.

What is the significance of twist rate in 8.6 Blackout compared to .300 Blackout?

8.6 Blackout often features a faster twist rate (e.g., 1:3) compared to .300 Blackout (e.g., 1:7 or 1:8). This faster twist generates significantly higher RPMs, which can cause conventional bullets to disintegrate, necessitating the use of solid copper projectiles for integrity.

Did supersonic rounds penetrate 1/4-inch mild steel?

No, supersonic rounds from both .300 Blackout (110 gr TAC-TX) and 8.6 Blackout (210 gr TSX) failed to penetrate 1/4-inch mild steel. The 8.6 Blackout round caused a larger bulge and minor cracking on the steel's backside.

What specialized ammunition was highlighted for 8.6 Blackout?

Gorilla Ammunition's specialized subsonic rounds for 8.6 Blackout were highlighted, including the 205 gr Silverback and the 342 gr Pork Shredder. The latter, a massive solid copper projectile, demonstrated impressive penetration against concrete.

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