7.62 vs 5.45 - Which Is Better?

Published on September 7, 2021
Duration: 18:00

This video compares the 7.62x39mm and 5.45x39mm calibers, primarily in AK platforms. While 7.62 offers more close-range energy and affordability, 5.45 provides superior long-range ballistics, lower recoil, and faster follow-up shots due to its higher velocity and lighter projectile. Gel testing reveals distinct wound channel characteristics for each caliber, with 5.45's tumbling effect proving particularly devastating.

Quick Summary

The 7.62x39mm caliber offers more close-range energy and is often more affordable, but produces higher recoil. The 5.45x39mm caliber is faster, lighter, provides lower recoil for quicker follow-up shots, and boasts superior long-range ballistics.

Chapters

  1. 00:00Introduction: 7.62 vs 5.45 Debate
  2. 00:35Ammunition and Rifle Selection
  3. 01:427.62x39mm Shooting Characteristics
  4. 02:445.45x39mm Shooting Characteristics
  5. 04:53Ballistics Gel Testing: 16-inch Barrels
  6. 08:41Short Barrel Performance (Krinkov)
  7. 11:54Long Barrel Performance (RPK)
  8. 15:00Final Comparison and Verdict

Frequently Asked Questions

What are the main differences between 7.62x39mm and 5.45x39mm calibers?

7.62x39mm is a heavier, slower round with more close-range energy and higher recoil. 5.45x39mm is lighter, faster, offers lower recoil, faster follow-up shots, and better long-range ballistics, similar to 5.56 NATO.

How do 7.62x39mm and 5.45x39mm perform in ballistics gel tests?

7.62x39mm creates a significant temporary cavity due to its energy transfer. 5.45x39mm, particularly the 7N6 surplus round, shows early tumbling and yawing, resulting in devastating wound channels despite less raw energy.

Which caliber is better for short-barreled rifles like the AKS-74U?

In short barrels, 7.62x39mm maintains its energy effectively. The 5.45x39mm 7N6 round can exhibit extreme tumbling, even causing unusual effects outside the target medium.

What are the pros and cons of 7.62x39mm ammunition?

Pros include being more common, generally more affordable, and harder-hitting at close range. Cons are higher recoil and slower target re-acquisition compared to 5.45x39mm.

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