Guntube is Wrong about 55gr FMJ 5.56 for WROL/SHTF

Published on January 10, 2025
Duration: 13:17

This video debunks common myths surrounding 55-grain FMJ 5.56x45mm NATO ammunition for WROL/SHTF scenarios. The speaker, Trench Grenade, emphasizes that while 55-grain FMJ may experience increased deviation past 350 meters and is less effective in shorter barrels (under 14.5 inches) due to reduced velocity and yaw capability, it remains a viable option for home defense and general use with longer barrels (14.5 inches and above). The discussion highlights the importance of barrel length in achieving optimal projectile performance and yaw for terminal ballistics.

Quick Summary

55-grain FMJ 5.56x45mm NATO ammunition is viable for WROL/SHTF, particularly for home defense, when used with longer barrels (14.5 inches and up). Shorter barrels (under 14.5 inches) reduce velocity, hindering yaw and fragmentation. For optimal performance, longer barrels are recommended to ensure adequate projectile velocity and effectiveness.

Chapters

  1. 00:12Intro & Video Purpose
  2. 00:2355gr FMJ for WROL/SHTF Discussion
  3. 00:56Content & Engagement Call to Action
  4. 01:50Internet Myths About 55gr FMJ
  5. 02:13Truths About 55gr FMJ Performance
  6. 02:26Accuracy Deviation Past 350 Meters
  7. 03:02Barrel Length & Wind Considerations
  8. 03:26Short Barrel (Mark 18) vs. 55gr FMJ
  9. 03:44Comparison: 62gr Green Tip & 77gr OTM
  10. 04:16Performance Issues with Barrels < 14.5 Inches
  11. 04:32Understanding Bullet Yaw
  12. 05:03Yaw Issues Beyond 100-150 Meters
  13. 05:20Terminal Effects vs. Yaw Capability
  14. 05:58Summary for Stockpiled 55gr FMJ
  15. 06:02Barrel Length Recommendations for 55gr
  16. 06:35Debunking YouTube Hype
  17. 06:50Overall Recommendation & Velocity
  18. 07:18Ideal Barrel Lengths (20-inch)
  19. 07:44Cost-Effective Ammo & Barrel Life
  20. 08:08Barrel Life with 55gr FMJ
  21. 08:22Steel Case vs. Brass Case Ammunition
  22. 08:38Final Advice for 55gr Stockpiles
  23. 09:01Rethinking Short Barrels with 55gr
  24. 09:0877gr OTM for Short Barrels (11.5 inch)
  25. 09:59Key Takeaway: More Barrel is Better
  26. 10:59Link for PSA & Short Barrel Owners
  27. 11:24Comment Section Prompt
  28. 11:29Personal Rifle Inventory
  29. 11:40Using Right Loading for Barrel Length
  30. 11:50Bad Time with Short Barrel & 55gr
  31. 12:0755gr for Suppression vs. Yaw/Fragmentation
  32. 12:16Summary: Barrel Length & Bullet Choice
  33. 12:2655gr FMJ Characteristics
  34. 12:35Velocity & Yaw/Fragmentation
  35. 12:38Outro & Engagement

Frequently Asked Questions

Is 55-grain FMJ 5.56x45mm NATO ammunition suitable for WROL or SHTF scenarios?

Yes, 55-grain FMJ 5.56x45mm NATO can be suitable for WROL/SHTF, especially for home defense, provided it's used with appropriate barrel length. While it may show accuracy deviations past 350 meters and is less effective in very short barrels, it remains a viable option with longer barrels (14.5 inches and up).

What is the optimal barrel length for using 55-grain FMJ 5.56x45mm NATO ammunition?

For optimal performance, 55-grain FMJ 5.56x45mm NATO ammunition is best utilized with barrel lengths of 14.5 inches or longer. Longer barrels provide the necessary velocity for better accuracy, yaw, and fragmentation, making the ammunition more effective for defensive purposes.

Why is barrel length critical for 55-grain FMJ 5.56x45mm NATO ammunition performance?

Barrel length is critical because it dictates the velocity of the projectile. Shorter barrels (under 14.5 inches) reduce the velocity of 55-grain FMJ, hindering its ability to reliably yaw and fragment upon impact, which is crucial for effective terminal ballistics.

What are the limitations of 55-grain FMJ 5.56x45mm NATO ammunition in short-barreled rifles?

In short-barreled rifles (e.g., 10.3 to 12.5 inches), 55-grain FMJ 5.56x45mm NATO ammunition suffers from reduced velocity. This significantly impacts its terminal ballistics, as it's less likely to yaw and fragment effectively, making it less ideal for critical defensive engagements beyond close range.

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