How Deadly Is 5.56 At Close Range?

Published on December 7, 2025
Duration: 29:08

This guide outlines the experimental process used by Garand Thumb to test the close-range lethality of 5.56x45mm NATO ammunition from various barrel lengths (10.3", 11.5", 16"). Utilizing ballistics gel and high-speed cameras, the test provides data on projectile performance, debunking myths about short-barreled rifle effectiveness. The expert-level analysis confirms 5.56mm's devastating performance even from SBRs at moderate distances.

Quick Summary

5.56x45mm NATO ammunition is devastatingly lethal at close range, even from short-barreled rifles (SBRs) with barrels as short as 10.3 inches. Tests using ballistics gel and high-speed cameras confirm significant yawing and fragmentation, proving SBRs are highly effective for tactical applications within 125 yards.

Chapters

  1. 00:00Introduction to 5.56 Lethality
  2. 02:47Experimental Setup
  3. 06:08M855 Testing at 25 Yards
  4. 12:43Hornady 68gr BTHP Testing at 25 Yards
  5. 18:10125 Yard Performance Test
  6. 28:16Conclusion and Final Thoughts

Frequently Asked Questions

How effective is 5.56mm ammunition from short-barreled rifles (SBRs) at close range?

Even from short barrels like 10.3 inches, 5.56x45mm NATO ammunition remains devastatingly lethal at close range. Tests show significant yawing and fragmentation, with SBRs proving more than sufficient for tactical applications within 125 yards.

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