Is 5.7x28mm Just Overpriced .22 Magnum? [Part 1]

Published on January 8, 2024
Duration: 13:23

The 5.7x28mm cartridge, developed by FN Herstal, offers higher velocities than .22 Magnum from shorter barrels but lacks the mass of rifle calibers. Terminal ballistics testing shows inconsistent penetration and temporary cavity effects, with some loads failing to meet minimum depth requirements. Despite its use by elite units, real-world feedback highlights concerns about stopping power and high ammunition costs, leading some departments to seek alternatives.

Quick Summary

The 5.7x28mm cartridge, developed for PDWs, offers higher velocities than .22 Magnum but lacks rifle-caliber energy. Terminal ballistics testing reveals inconsistent penetration, and expert feedback notes issues with stopping power and high ammo costs.

Chapters

  1. 00:00Introduction and History of 5.7x28mm
  2. 04:01Technical Comparisons: 5.7x28mm vs .22 Magnum
  3. 05:55Terminal Ballistics and Gel Testing
  4. 10:09Real-World Performance and Expert Feedback

Frequently Asked Questions

What was the original purpose of the 5.7x28mm cartridge?

The 5.7x28mm cartridge originated from a late 1980s NATO project seeking a new Personal Defense Weapon (PDW) to replace the 9mm cartridge for support personnel.

How does 5.7x28mm compare ballistically to .22 Magnum?

The 5.7x28mm offers higher velocities from shorter barrels than .22 Magnum. While sharing a bullet diameter with 5.56 NATO, it lacks its mass and energy, placing it in pistol ballistics.

What are the terminal ballistics concerns with 5.7x28mm?

Testing shows inconsistent penetration, with some loads failing minimum depth requirements. While high velocity is achieved, temporary wound cavity effects can be less significant than expected.

What is the real-world feedback on 5.7x28mm stopping power?

Expert feedback suggests multiple rounds are often required for incapacitation. High ammunition costs and training requirements also lead some departments to seek alternatives.

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