300 Blackout vs 8.6 Blackout: Worse Than Expected

Published on November 1, 2024
Duration: 15:51

This video compares 300 Blackout and 8.6 Blackout performance, revealing that standard subsonic rounds struggle against barriers like concrete. Exotic solid copper rounds, like Gorilla Ammunition's 342 gr Pork Shredder, show superior penetration. High RPMs generated by 8.6 Blackout's fast twist rate (1:3) are crucial for terminal ballistics, especially with solid copper projectiles, as conventional bullets can disintegrate.

Quick Summary

Standard subsonic rounds for both .300 Blackout and 8.6 Blackout struggle against concrete barriers. Exotic solid copper projectiles, like the 342 gr Pork Shredder, show superior penetration. High RPMs from 8.6 Blackout's fast twist rate necessitate solid copper bullets to prevent disintegration.

Chapters

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

Frequently Asked Questions

How do standard subsonic rounds perform against concrete barriers in 300 Blackout vs 8.6 Blackout?

In testing, standard subsonic rounds for both .300 Blackout (220 gr SMK) and 8.6 Blackout (300 gr SMK) failed to penetrate 1.57-inch thick concrete pavers, shattering the pavers without effectively reaching targets behind them.

What is the significance of the 1:3 twist rate in 8.6 Blackout regarding bullet performance?

The 1:3 twist rate in 8.6 Blackout generates extremely high RPMs (up to 500,000). This rapid spin can cause conventional bullets to disintegrate, necessitating the use of solid copper projectiles for optimal performance and integrity.

Can 8.6 Blackout penetrate mild steel barriers?

During testing against 1/4-inch mild steel, supersonic 8.6 Blackout rounds (210 gr TSX) did not penetrate the plate, although they caused a more significant bulge and slight cracking compared to .300 Blackout.

What are the advantages of the Ultradyne UD Chassis?

The Ultradyne UD Chassis is highlighted as a lightweight (2.766 lbs), American-made, and cost-effective alternative to high-end carbon fiber stocks. It features a built-in Arca rail for accessory mounting.

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