5.7x28mm vs. 9mm | Gun Talk Videos

Published on September 28, 2023
Duration: 5:04

This video provides a direct comparison between the 5.7x28mm and 9mm calibers, focusing on their terminal ballistics and performance characteristics. The expert demonstrates live-fire tests using melons to illustrate the impact differences, while also discussing pressure levels and capacity. The analysis suggests that while 5.7x28mm offers potential advantages in velocity and penetration against certain barriers, 9mm often delivers more immediate devastating effect in terminal ballistics tests.

Quick Summary

The 5.7x28mm caliber was designed to offer higher velocity and better penetration against body armor compared to the 9mm. However, in terminal ballistics tests using melons, a 9mm hollow point round demonstrated a more devastating immediate impact than a 5.7x28mm hollow point.

Chapters

  1. 00:09Introduction: 5.7x28mm vs 9mm Design Goals
  2. 00:55Melon Test Setup and Methodology
  3. 01:159mm Melon Test: Initial Firing
  4. 01:429mm Melon Test Results & 5.7 Comparison
  5. 02:075.7x28mm Pistol Test Setup
  6. 02:235.7x28mm Pistol Melon Test Results
  7. 02:479mm Charger Pistol Test Setup
  8. 03:139mm Charger Melon Test Results Explained
  9. 03:30Caliber Pressure Comparison: 5.7 vs 9mm
  10. 03:495.7x28mm Charger Pistol Test Setup
  11. 04:135.7x28mm Charger Melon Test Results
  12. 04:22Capacity Comparison & Final Thoughts
  13. 04:55Gun Talk Media Resources

Frequently Asked Questions

What are the key design differences between 5.7x28mm and 9mm ammunition?

The 5.7x28mm was designed for personal defense weapons, aiming for higher velocity and better penetration against body armor than the 9mm. The 9mm is a widely adopted standard, known for its effectiveness and versatility.

How does the terminal ballistics of 5.7x28mm compare to 9mm in practical tests?

In tests using melons, a 9mm hollow point round demonstrated more immediate devastating effect than a 5.7x28mm hollow point. The 5.7x28mm showed a significant exit wound but less dynamic impact.

What are the pressure differences between 5.7x28mm and 9mm cartridges?

The 5.7x28mm caliber operates at a higher pressure, around 50,000 PSI, which is comparable to .223 Remington. The 9mm caliber typically operates at a lower pressure, around 35,000 PSI.

Does barrel length affect the performance of 5.7x28mm and 9mm ammunition?

Yes, longer barrels provide more time for powder to burn and pressure to build, generally increasing velocity and impact. This was observed in tests where a 9mm round from a longer-barreled Ruger Charger was more devastating.

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