9MM vs .300 Blackout!...Subsonic Home Defense!

Published on November 22, 2022
Duration: 13:17

This expert-level analysis from Tools&Targets compares subsonic 9mm and .300 Blackout ammunition for home defense. The video details a rigorous ballistic gel test, including chronograph readings, wound channel analysis, and projectile recovery. The instructor, demonstrating significant expertise, concludes that while both perform well, the 9mm T-Series offers superior expansion and penetration in this specific short-barreled configuration.

Quick Summary

Expert ballistic gel testing shows subsonic 9mm Winchester Ranger T-Series 147gr outperforming .300 Blackout Hornady Sub-X 190gr from short barrels for home defense. The 9mm achieved greater expansion (0.754-0.774") and penetration (21.25") with excellent weight retention (99.8%).

Chapters

  1. 00:00Introduction & Testing Setup
  2. 00:53Ammunition Selection & Rationale
  3. 02:57Firearms Used for Testing
  4. 03:45Chronograph Testing - 9mm
  5. 04:38Chronograph Testing - .300 Blackout
  6. 05:39Velocity & Energy Comparison
  7. 06:14Gel Ballistic Testing - 9mm
  8. 06:44Gel Ballistic Testing - .300 Blackout
  9. 09:13Recovered Projectile Examination
  10. 10:19Weight Retention & Expansion Metrics
  11. 11:14Conclusion & Personal Recommendation
  12. 11:57Final Thoughts & Channel Promotion

Frequently Asked Questions

How do subsonic 9mm and .300 Blackout compare in ballistic gel for home defense?

In short-barreled AR platforms, subsonic 9mm Winchester Ranger T-Series 147gr showed superior expansion (0.754-0.774") and penetration (21.25") compared to .300 Blackout Hornady Sub-X 190gr (0.418-0.432" expansion, 17" penetration), despite slightly less energy.

What were the velocities and energies of the tested subsonic rounds?

The 9mm averaged 1095 fps with 391 ft-lb energy, while the .300 Blackout averaged 999 fps with 421 ft-lb energy. Both exceeded expectations for their respective short barrels.

Which ammunition performed better in terms of expansion and weight retention?

The 9mm T-Series exhibited significantly greater expansion (0.754-0.774") and excellent weight retention (99.8%), while the .300 Blackout Sub-X had less expansion (0.418-0.432") but also near-perfect weight retention (99.7%).

Does a heavier bullet at slower speed always have more energy?

Yes, a heavier projectile at a slower velocity can indeed possess more kinetic energy than a lighter projectile at a higher velocity, as demonstrated by the .300 Blackout's higher energy despite its lower fps compared to the 9mm.

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