Define "muzzle velocity."

Muzzle velocity refers to the speed at which a projectile exits the barrel of a firearm. It is a critical measurement because it directly influences the projectile's performance and effectiveness, including its range, accuracy, and impact energy upon hitting a target. Understanding muzzle velocity is essential for gunners and marksmen in order to make informed decisions regarding ballistic calculations and ammunition selection.

In contrast to other variables, such as the weight of the projectile or how it is loaded, muzzle velocity specifically focuses on the dynamics of the projectile's exit from the barrel, making it a fundamental concept in ballistics and firearms operation.