What results from insufficient chamber pressure?

Insufficient chamber pressure can lead to a phenomenon commonly referred to as "stickers." This occurs when the projectile does not have enough force behind it to overcome friction and other resistive forces as it travels through the barrel. As a result, the projectile may become lodged or stick within the bore, potentially leading to misfires or other malfunctions.

Understanding this concept is vital for ensuring the proper functioning of artillery systems like the M777A2 Howitzer. Adequate chamber pressure is crucial for delivering the expected velocity and trajectory of the projectile, and it directly impacts the reliability and effectiveness of the weapon system. In contrast, breech block failure, excessive recoil, and increased velocity are conditions tied to other factors in the firing process and are not directly caused by insufficient chamber pressure.