Hello, I'm an expert in the field of physics and mechanics, and I can explain the process of how a bullet is fired from a gun.

When a trigger is pulled, it releases the hammer which strikes the back of the primer. The primer is a small, impact-sensitive device that ignites when struck. The primer then ignites the gunpowder (also known as the propellant) within the cartridge. The gunpowder is a fast-burning substance that rapidly produces a large volume of gases when ignited.

These gases expand rapidly and exert a tremendous amount of force on the bullet, which is seated at the front end of the cartridge. The barrel of the gun is a long, narrow tube that guides and accelerates the bullet as it moves forward. The bullet is typically slightly smaller in diameter than the inside of the barrel, which allows the gases to push the bullet forward without escaping around it.

As the bullet travels down the barrel, it gains velocity. The shape of the bullet is designed to minimize air resistance and maintain its path, which is why bullets are often shaped like a small cylinder with a pointed tip. Once the bullet reaches the end of the barrel, it exits the gun at high speed, which is what we refer to as the bullet being fired.

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When you pull the trigger of a gun, a spring mechanism hammers a metal firing pin into the back end of the cartridge, igniting the small explosive charge in the primer. The primer then ignites the propellant��the main explosive that occupies about two thirds of a typical cartridge's volume.read more >>