What do the terms "projectile and charge" relate to?

The terms "projectile and charge" relate specifically to the condition of the propelling charge and the gun. In artillery and ordnance terminology, the projectile refers to the physical object being fired, while the charge denotes the amount and condition of the propellant used to launch that projectile. Proper knowledge of the charge’s condition is critical as it influences the projectile's velocity, trajectory, and accuracy.

Understanding the interaction between the projectile and charge is essential for determining effective firing solutions and ensuring optimal performance of the weapon system. It encompasses aspects such as how well the gun is maintained, the type of propellant used, and the compatibility of the projectile with the charge, which all impact the overall effectiveness and efficiency in engaging targets.