Rifleman Q&A: What Is A Squib Load?

posted on January 9, 2017
squib.jpg

This picture is of an unusual incident whereby five bullets were stuck in a barrel; one just peeping out the muzzle, three more behind it and another which has jumped partially out through a crack in the top of the barrel. This stoppage was initially caused by a squib load.

Q: I recently encountered a malfunction that left a bullet stuck in my barrel. Thankfully the gun failed to cycle the next round, leaving a stove-piped case. What does one do in the event this happens? What causes this to occur? And is there a specific name for this situation?

A: We are glad you noticed the potentially catastrophic hazard before attempting to fire another round. As stated in the NRA Firearms Sourcebook, p. 23, this type of failure or stoppage is considered a “squib load” and is defined as “a cartridge or shell that produces projectile velocity and sound substantially lower than normal.”

“Most commonly, the shooter will be aware of a squib load as a shot that does not produce the expected level of either noise or recoil. Such a condition can be caused by a number of factors: use of old or deteriorated ammunition; contamination of the primer or powder charge; or failure to load a primed case with a sufficient amount of powder. Under the best conditions, the squib load has sufficient power to propel the bullet out of the muzzle (albeit at less than normal velocity). Often, however, a squib load leaves a bullet lodged in the bore—and therein lies the danger. If the shooter fails to recognize that he or she has had a squib load and fires a successive shot with the bore obstructed, disastrous consequences may result for both the gun and the shooter.”

To remedy the obstruction, it is suggested that the operator first unload the firearm by removing the magazine, followed by removing the spent case and/or live round from the chamber. With the firearm declared safe, inspect the bore for obstruction. The same safety procedure applies to revolvers—empty the cylinder and/or remove if possible. Some instances of bullets lodging between the cylinder and forcing cone have occurred, resulting in a seized cylinder. The simplest method for removing a bullet lodged in the bore is with a range rod. Due to the bullet’s obturation, additional force from a mallet or hammer may be required to successfully remove the obstruction—a task that might best be left to a qualified gunsmith who could further inspect the firearm.

Latest

Big Horn
Big Horn

Big Horn Armory Announces Expansion

Big Horn Armory is hiring more employees, obtaining a new and larger building, purchasing additional machinery and doubling suppliers.

How To Mount A Precision Riflescope

Mounting a scope on a rifle for precision shooting can be a difficult and frustrating endeavor when doing it yourself. Here, we look at some tips on how to best accomplish precision scope mounting for rifles.

Springfield Armory SA-35 High Power: Classic, Modern, American

It’s been several years since the venerable Browning Hi Power was imported by its original European manufacturer. Now the classic is being made by Springfield Armory right here in the United States—
at a surprisingly reasonable price.

Review: Mossberg Optics-Ready MC2sc 9 mm Pistol

This well thought out, trimmed down, new striker-fired 9 mm Mossberg handgun with a red-dot optic is an ideal daily carry option.

The Armed Citizen® Oct. 25, 2021

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Review: Mossberg 590S Shockwave

This most recent version of the Mossberg 590 reliably feeds 1¾" mini shells for reduced levels of felt recoil and an increased on-board shell capacity.

Interests



Get the best of American Rifleman delivered to your inbox.