How Insane Is The US Army's Sniper Bullet?

Published on October 3, 2025
Duration: 12:59

This video tests the penetration capabilities of the .300 Winchester Magnum armor-piercing round against various steel thicknesses and RMA's XRT Special Threat Plate. The Swiss P AP round successfully penetrated 1.25 inches of mild steel and the XRT plate, demonstrating significant armor-piercing power. While the XRT plate stopped the standard MK 248 Mod 1 round, it was defeated by the AP variant. The test concludes that the .300 Win Mag AP round is highly effective against most common barriers.

Quick Summary

The .300 Win Mag armor-piercing sniper bullet can penetrate up to 1.25 inches of mild steel and was finally stopped by a 1.5-inch steel plate. RMA's XRT Special Threat Plate stopped standard .300 Win Mag rounds but was penetrated by AP variants.

Chapters

  1. 00:00Intro: .300 Win Mag AP Sniper Rounds
  2. 01:19Rifle Comparison: Bergara vs. Military
  3. 02:54Body Armor Test: RMA XRT Plate
  4. 04:30Multi-Hit Test on XRT Plate
  5. 06:42AP Round vs. Compromised Body Armor
  6. 08:18Extreme Steel Penetration Test
  7. 11:48Final Test & Conclusion

Frequently Asked Questions

What is the penetration capability of the .300 Win Mag armor-piercing sniper bullet?

The .300 Win Mag armor-piercing round, specifically the RUAG Swiss P AP variant, demonstrated the ability to penetrate up to 1.25 inches of mild steel cleanly. It was finally stopped by a 1.5-inch thick mild steel plate.

Can RMA's XRT Special Threat Plate stop a .300 Win Mag armor-piercing round?

The RMA XRT Special Threat Plate successfully stopped the standard MK 248 Mod 1 .300 Win Mag round. However, it was penetrated by the RUAG Swiss P AP .300 Win Mag armor-piercing round after being compromised by previous impacts.

How does the Bergara B14 HMR Carbon compare to military sniper rifles?

The Bergara B14 HMR Carbon shares similar barrel lengths and twist rates with military sniper rifles like the Mark 13 Mod 5 and XM2010, but is notably lighter and more cost-effective.

What other threats can the RMA XRT Special Threat Plate handle?

The RMA XRT Special Threat Plate is rated for threats including M193, M855, M80, M855A1, 7.62x39 API BZ, M80A1, and 7.62x54R API, and also showed multi-hit capability against M80A1 and M62A1 rounds.

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