Short barrel is more accurate (ATF hates this)

Published on May 11, 2024
Duration: 2:59

This video demonstrates a DIY barrel shortening experiment on a WWSQD rifle, highlighting the impact of muzzle crown quality on accuracy. Initially, a crudely cut barrel surprisingly yielded decent results, but professional crowning by a gunsmith led to significant accuracy improvements. The experiment suggests that a shorter, more rigid barrel can enhance accuracy despite reduced muzzle velocity.

Quick Summary

This firearms experiment demonstrates that shortening a rifle's pencil barrel can improve accuracy due to increased rigidity. After a crude DIY cut and subsequent professional muzzle crowning, accuracy at 100 meters significantly improved, with groups as tight as 1.3 MOA.

Chapters

  1. 00:00Experiment Premise: Short Barrel Accuracy
  2. 00:11Baseline Accuracy Tests (Unsuppressed & Suppressed)
  3. 00:31Initial Accuracy Results (Unmodified Barrel)
  4. 00:39DIY Barrel Shortening Process (Crude Cut)
  5. 01:03First Shots with Crudely Cut Barrel
  6. 01:36Accuracy Surprise: Crudely Cut Barrel Results
  7. 01:47Professional Muzzle Crowning & Finishing
  8. 01:52Post-Gunsmith Accuracy Testing
  9. 02:29Final Accuracy Results & Discussion

Frequently Asked Questions

Can shortening a rifle barrel improve its accuracy?

Yes, this experiment suggests that shortening a pencil barrel can improve accuracy due to increased rigidity. After professional crowning, the short barrel achieved significantly better groups than the original, despite reduced muzzle velocity.

What is the impact of a poor muzzle crown on rifle accuracy?

A poor muzzle crown, like that from a crude hacksaw cut, can still yield surprisingly decent groups but will likely be less consistent and may cause excessive muzzle flash. Professional crowning is crucial for optimal accuracy.

What ammunition was used in the barrel shortening accuracy test?

The test utilized Sellier & Bellot .223 REM ammunition in 55gr FMJ, 69gr HPBT, and 77gr HPBT weights. These were used to establish baseline accuracy and compare results after barrel modifications.

What is the role of barrel rigidity in rifle accuracy?

Increased barrel rigidity, achieved by shortening the barrel, can lead to improved accuracy. A more rigid barrel is less prone to flexing during firing, allowing for more consistent projectile exit and tighter shot groups.

More Gunsmithing & DIY Videos You Might Like

More from Polenar Tactical

View all →