Rifleman Q&A: What Is A Squib Load?

posted on January 9, 2017
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
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

Magpul Hunter Lite Stock
Magpul Hunter Lite Stock

New for 2026: New Products from Magpul

Magpul announces new metal-magazines, new stocks and pistol frames.

New for 2026: Burris Veracity Riflescopes

The latest generation of Veracity scopes is available in a variety of 5X magnification ranges.

New for 2026: Springfield Armory 10-8 Performance Master Class 1911 Pistols

Springfield Armory and Lipseys have partnered to offer a highly custom 1911 with input from Hilton Yam.

New For 2026: Diamondback SDR-A

Following the release of its Self-Defense Revolver in 2024, Diamondback Firearms has now lightened its design and reduced the cost with the new-for-2026 SDR-A.

Rifleman Review: Walther Arms PDP F-Series 4-Inch

Walther Arms continues to expand its F-Series handgun line, a design initially developed for women but that has broad appeal across the firearm consumer market, thanks to its unique design elements and feature set.

Mossberg Expands Budget-Priced Maverick Line With Semi-Auto Model

As part of its International family of shotguns, Mossberg announced the introduction of the Maverick SA Semi-Auto, a versatile, value-focused semi-automatic platform built to deliver reliable performance.

Interests



Get the best of American Rifleman delivered to your inbox.