Ignites the powder.
Firing pin strikes primer, primer ignites powder, powder burns and turns into gas, gas expands and pushes projectile out of the barrel
Firing pin strikes primer, primer ignites powder in case, expanding gases push projectile down the bore.
A bullet is propelled by the controlled explosion of gunpowder in the cartridge. When the gun's firing pin strikes the primer, it ignites the gunpowder, which rapidly expands to create gas pressure that propels the bullet down the barrel and out of the gun.
Hangfire - A delay between the firing pin blow and the ignition of the powder, usually caused by old or contaminated primer/propellant which ignites slower than usual.
It would probably help to define a few things.A "bullet" is only the projectile which comes out of the muzzle of the barrel and is propelled at the target.Gun powder is the propellant.The primer is a tiny explosive charge which ignites the gun powder.The case is the cylindrical object which holds the primer, powder, and bullet.A cartridge is the assembled case, primer, powder, and bulletPeople frequently say "bullet" when they really mean "cartridge".Cartridges contain gun powder, bullets generally do not.
The sound depends upon what has caused the misfire. If the primer is not ignited, the only sound will be a loud click as the firing pin strikes it. If the primer ignites but does not ignite the powder charge (which may be absent) the only sound will be a loud 'POP". If the primer ignites an insuficient powder charge (some fraction of what the normal charge would be), there will be a muffled "BANG" of much less intensity than a full charge. An experienced shooter will be able to hear and determine any of these misfire conditions.
You activate the trigger, the hammer or striker hits the firing pin, the firing pin strikes the primer in the cartridge, which ignites the powder charge in the case.
Firing pin strikes primer, primer ignites powder, powder burns and turns into gas, gas propels the shot cup down the barrel, shot cup exits barrel and falls away from shot column at @ 7m, shot column begins to string out and form circular pattern.
It has a small amount of material that is sensitive to shock. When a firing pin strikes the primer, it ignites.
Primer.
A cartridge consists of a cartridge case with primer, the powder filling, and the bullet (the projectile). When a cartridge is fired, the primer ignites the powder, which burns, driving the bullet out of the barrel. The now empty cartridge case may be automatically ejected from the gun (falls to the ground) or may have to be ejected by hand- depends on the gun.