Internal ballistics is the study of the processes that occur within a firearm from the moment the trigger is pulled until the projectile exits the barrel. This includes the ignition of the propellant, the rapid expansion of gases, and the acceleration of the bullet. Understanding these processes helps in improving firearm performance and safety. Key factors in internal ballistics include the type of propellant used, the design of the firearm, and the characteristics of the projectile. By analyzing these elements, engineers and scientists can optimize the efficiency and effectiveness of ammunition, leading to better accuracy and reduced recoil.