Civilian Ammo vs Military Ammo, Is There A Difference?!

Published on January 29, 2021
Duration: 14:22

This review compares civilian Black Hills 77gr OTM and military Mk 262 Mod 1 5.56mm ammunition. While visually similar, the military round features non-staked primers and consistently shows higher velocities (around 2675 fps vs 2659 fps). Terminal performance tests in watermelons and ballistic gel indicate the Mk 262 Mod 1 offers slightly more dramatic energy transfer and a larger wound cavity, suggesting it is functionally more powerful.

Quick Summary

Military Mk 262 Mod 1 ammunition is functionally more powerful than civilian Black Hills 77gr OTM. While similar in accuracy, the military round shows higher velocities (approx. 2675 fps vs 2659 fps) and creates a larger wound cavity in ballistic gel tests.

Chapters

  1. 00:00Intro: Civilian vs Military Ammo
  2. 00:54Visual & Primer Differences
  3. 02:28Accuracy Testing (50 Yards)
  4. 04:02Velocity Test Results
  5. 05:07Watermelon Terminal Performance
  6. 07:20Ballistics Gel Testing
  7. 11:58Spray Paint Can Energy Test
  8. 13:31Conclusion: Military Ammo More Powerful?

Frequently Asked Questions

What are the key differences between civilian Black Hills 77gr OTM and military Mk 262 Mod 1 ammunition?

The military Mk 262 Mod 1 lacks staked primers found on the civilian Black Hills 77gr OTM. Testing shows the military round is slightly faster, averaging around 2675 fps compared to 2659 fps for the civilian version.

How does the accuracy of civilian vs. military 77gr 5.56mm ammunition compare?

In a 50-yard accuracy test using a BCM AR-15, both rounds performed similarly. The military Mk 262 Mod 1 produced a slightly tighter group, though a potential flyer was noted in the civilian ammunition's performance.

What were the terminal performance results for civilian and military 77gr ammunition?

Both rounds showed significant destructive power. Ballistic gel testing indicated the Mk 262 Mod 1 created a larger wound cavity and fragmented slightly later, suggesting more dramatic energy transfer than the civilian Black Hills 77gr OTM.

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