Barrel Length *Energy Test* (Does Size ACTUALLY Matter?)

Published on November 15, 2024
Duration: 1:12

This video demonstrates a ballistic gelatin test comparing the energy transfer of firearms with different barrel lengths. An experienced instructor highlights how a longer barrel significantly increases projectile energy and expansion, leading to greater damage potential. The test uses Hornady Critical Defense rounds and compares a 7.5-inch barrel against a 24-inch AR-15 upper.

Quick Summary

A ballistic gelatin test comparing a 7.5-inch barrel to a 24-inch AR-15 barrel demonstrated that longer barrels impart significantly more energy. The 24-inch barrel resulted in nearly double the bullet expansion of the 7.5-inch barrel using Hornady Critical Defense rounds, indicating greater terminal ballistics performance.

Chapters

  1. 00:00Barrel Length vs. Energy Test Intro
  2. 00:17Ammunition and Test Setup
  3. 00:23Short Barrel Test Results
  4. 00:35Long Barrel Test Setup
  5. 00:49Long Barrel Test Results & Comparison

Frequently Asked Questions

How does barrel length affect a firearm's energy transfer?

A longer barrel generally imparts more velocity and energy to a projectile. This test showed a 24-inch barrel resulted in nearly double the bullet expansion compared to a 7.5-inch barrel, indicating significantly greater energy transfer and terminal ballistics performance.

What ammunition was used in the barrel length energy test?

The test utilized Hornady Critical Defense self-defense rounds, which feature expanding tips. The instructor noted that both barrel lengths tested resulted in the bullets exiting the ballistic gelatin block.

What is ballistic gelatin used for in firearm testing?

Ballistic gelatin is a standardized medium that simulates the effects of a projectile impacting biological tissue. It allows testers to measure critical performance metrics like bullet expansion, penetration depth, and overall energy transfer.

Does a longer AR-15 barrel increase damage potential?

Yes, according to this ballistic gelatin test, a longer barrel (24 inches) significantly increased bullet expansion and energy transfer compared to a shorter barrel (7.5 inches), suggesting greater damage potential.

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