A cartridge is a type of ammunition packaging a bullet or shot, a propellant substance and a primer within a metallic, paper, or plastic case that is precisely made to fit within the firing chamber of a firearm. The primer is a small charge of an impact-sensitive or electric-sensitive chemical mixture that can be located at the center of the case head , inside a rim , or in a projection such as in a pinfire or teat-fire cartridge

A cartridge is a type of ammunition packaging a bullet or shot, a propellant substance and a primer within a metallic, paper, or plastic case that is precisely made to fit within the firing chamber of a firearm. The primer is a small charge of an impact-sensitive or electric-sensitive chemical mixture that can be located at the center of the case head , inside a rim , or in a projection such as in a pinfire or teat-fire cartridge