What characterizes a squib load or "pop fire"?

A squib load, commonly referred to as a "pop fire," is characterized by a significantly less powerful discharge than a normal round. When a squib load is fired, the shooter typically hears a slight pop rather than the loud bang associated with standard ammunition. This low-volume discharge often results in little to no recoil, making it a notable and distinct experience compared to regular firing.

The phenomenon occurs due to various factors, such as insufficient gunpowder in the cartridge or a failure to ignite the propellant fully. Because there is minimal energy released, it does not generate the thrust expected from a typical shot, leading to an uneventful firing experience that may even go unnoticed in noisy environments.

Understanding the characteristics of a squib load is crucial for safety. If a shooter experiences a squib load but does not recognize it, there is a risk of a subsequent round being fired without the obstruction caused by the bullet that may be lodged in the barrel, which could result in a more severe malfunction. This awareness highlights the importance of always checking for potential obstructions whenever an abnormal noise is heard during shooting.