Squib Load!

Published on May 16, 2023
Duration: 12:16

This video demonstrates how to identify and remove a squib load lodged in a firearm barrel. Mark Serbu, a gun designer, explains that a squib load occurs when insufficient powder causes a projectile to lodge in the barrel. He details the process of clearing the obstruction using a rod and hammer, emphasizing the importance of safety and barrel inspection afterward. The video also touches on the physics behind potential barrel damage from subsequent shots.

Quick Summary

A squib load occurs when a projectile lodges in a firearm barrel due to insufficient powder. Identify it by reduced noise and recoil, and soot on the casing. Firing another round can cause dangerous pressure buildup, potentially bursting the barrel. Removal involves using a rod to push the projectile out, striking the rod with a hammer if necessary.

Chapters

  1. 00:01Introduction to Squib Loads
  2. 00:13Experiencing a Squib Load
  3. 01:10Identifying a Squib Load: Soot on Casing
  4. 01:33Visual Inspection of the Barrel
  5. 02:04Barrel Interior Comparison: Normal vs. Squib
  6. 03:00Walther CCP Gas-Delayed Blowback System
  7. 03:45Locating the Lodged Bullet
  8. 04:10Removing the Squib Load with a Rod
  9. 06:03Dangers of Firing After a Squib Load
  10. 06:30Physics of Pressure Buildup (P1V1=P2V2)
  11. 07:24Barrel Ring Formation Explained
  12. 08:33Machining vs. 'Medieval' Removal
  13. 09:33Post-Removal Inspection
  14. 10:21Barrel Damage Assessment
  15. 10:40Lessons Learned and Squib Load Stories

Frequently Asked Questions

What is a squib load and how can you identify it?

A squib load is a firearm malfunction where a projectile is fired with insufficient powder, causing it to lodge in the barrel. You can often identify it by a significantly reduced noise and recoil, and upon inspection, you may find soot on the spent casing because it failed to obturate properly.

What are the dangers of firing a gun with a squib load lodged in the barrel?

Firing a subsequent round after a squib load creates a double obstruction. This can lead to extreme pressure buildup, potentially causing the barrel to bulge or burst, creating a dangerous situation for the shooter and bystanders.

How do you remove a squib load from a gun barrel?

To remove a squib load, first ensure the firearm is unloaded. Then, use a cleaning rod or a similar sturdy rod inserted from the muzzle to push the lodged projectile out. For stubborn obstructions, you may need to strike the end of the rod with a hammer or use the firearm itself as a hammer.

What is obturation in firearms?

Obturation is the process where the cartridge case expands upon firing to create a seal within the firearm's chamber. This seal prevents hot gases from escaping backward into the action and ensures that the expanding gases efficiently propel the bullet down the barrel.

More Gunsmithing & DIY Videos You Might Like

More from markserbu

View all →