What Is A Squib Load

Squib Loads: The Worst Type Of Ammo-Related Malfunction

A squib load refers to an out-of-spec cartridge with insufficient powder to propel the bullet through the barrel. When this occurs, the projectile from the squib load becomes lodged in place and cannot be removed through normal means. This barrel blockage effectively renders the gun useless, as any subsequent attempts to fire are guaranteed to result in a catastrophic failure.

Classic Summary
Of all the ammo-related malfunctions, squib loads are among the most dangerous that shooters can encounter on the range.
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  • A stuck projectile prevents additional rounds from safely being fired
  • Risk of serious bodily injury or death
  • Challenging to clear, but can be avoided with proper cleaning and ammo selection

More specifically, a full-powered round would impact the stuck projectile from a squib load with such tremendous force that the barrel (and perhaps even the frame and slide) may become compromised. The simultaneous pressure generated by the exploding powder charge and propellant gasses would be trapped behind two stuck bullets, with nowhere to go except back towards the shooter.

Most would correctly assume that the resulting sensation would probably not be very pleasant for the shooter and anyone in the immediate vicinity, but the combination of weakened metal components and extreme backpressue has also been known to completely destroy small arms while suddenly sending shrapnel flying in every direction.

Recognizing A Squib Load & Clearing The Obstruction

Because squib loads are underpowered, they naturally have less recoil and a lower audible report than standard ammunition. This difference is distinct enough that shooters can typically differentiate between a normal round and a squib load (even while wearing hearing protection), provided they are shooting in a controlled manner.

Many ranges require at least 1-2 seconds between shots because the slower cadence of fire allows enough time to identify a squib load and call a cease fire before a catastrophic failure transpires. Once the range is cold and the firearm has been made safe, the shooter can remove the barrel and use tools to forcibly remove any obstructions.

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Fiocchi 9AP 1000 Rd Case - Fiocchi Shooting Dynamics 9mm 115 GR FMJ - Brass, Boxer, N/C, Reloadable - New Production - 1000 Rounds
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(0.249 per round)

How To Minimize Risk Of Squib Loads

In our experience, the best way to avoid squib loads is purchasing reliable ammunition from a reputable manufacturer. It stands to reason that reloaders and shooters who run cheap ammo with poor quality control will naturally be more likely to encounter squib loads than the average gun owner, as there are simply more opportunities for a flawed round to make it past inspection.

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PMC 556K X-Tac 5.56 NATO LAP M855 62 GR Ammunition, Green Tipped, Brass Cased, Boxer Primed, Reloadable, Non-Corrosive - 1000 Round Case
$499 99 $599.99
(0.500 per round)

You can also minimize risk of barrel blockages by properly cleaning and maintaining your firearms on a regular basis. Doing so will not prevent the projectile from a squib load from becoming stuck midway through the barrel, but it will make it easier to clear the obstruction if the barrel is free of debris and fouling. For a step-by-step visual guide to cleaning your pistol, be sure to watch our video below.

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