AAC 5.56 With 77gr Sierra MatchKing HPBT: Better Than The Military's MK262?

Published on December 20, 2022
Duration: 11:21

This video provides an in-depth, analytical review of the AAC 5.56 NATO load featuring the 77gr Sierra MatchKing HPBT bullet, comparing its performance to the military's MK262. Expert analysis from Mrgunsngear, utilizing chronograph data and ballistic gel testing, assesses its terminal ballistics and suitability for self-defense, noting its accuracy and affordability.

Quick Summary

The AAC 5.56 77gr Sierra MatchKing HPBT ammunition delivers strong performance, achieving 2,564 FPS from a 16-inch barrel and showing effective terminal ballistics in ballistic gel tests, including early fragmentation and substantial penetration, making it a viable and affordable self-defense option comparable to MK262.

Chapters

  1. 00:00Introduction to AAC 77gr 5.56 NATO
  2. 01:46Chronograph Testing: 10.4-inch Barrel
  3. 02:07Chronograph Testing: 16-inch Barrel
  4. 02:25Ballistic Gel Testing: 10.4-inch Barrel
  5. 04:28Ballistic Gel Testing: 16-inch Barrel
  6. 07:21Final Assessment and Accuracy

Frequently Asked Questions

How does the AAC 5.56 77gr Sierra MatchKing HPBT perform in terms of velocity?

The AAC 5.56 77gr Sierra MatchKing HPBT achieved an average velocity of 2,564 FPS from a 16-inch barrel and 2,274 FPS from a 10.4-inch barrel, indicating significant velocity loss with shorter barrels.

What are the terminal ballistics results for the AAC 5.56 77gr MatchKing in ballistic gel?

In ballistic gel, the 77gr MatchKing from a 16-inch barrel showed fragmentation starting at 3.5 inches and penetrated 16-21 inches. From a 10.4-inch barrel, fragmentation began around 4 inches, with a jacket fragment at 13.5 inches and the projectile exiting the side of the second block.

Is the AAC 5.56 77gr Sierra MatchKing HPBT considered a good self-defense round?

Yes, the AAC 5.56 77gr Sierra MatchKing HPBT demonstrates effective terminal ballistics, meeting or exceeding FBI penetration standards and showing a robust wound channel, making it suitable for self-defense applications.

How does the AAC 77gr MatchKing compare to the military's MK262 ammunition?

The AAC 77gr MatchKing is presented as a more affordable alternative to the military's MK262, offering competitive performance in terms of velocity and terminal ballistics based on the testing conducted.

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