Centerfire cartridges are a type of ammunition used in firearms where the primer is located in the center of the cartridge case's base. This design allows for reliable ignition of the gunpowder when struck by the firing pin. Centerfire cartridges are commonly used in rifles and handguns, making them popular for both hunting and target shooting. These cartridges come in various calibers and can be reloaded, which means spent cases can be reused by replacing the primer, powder, and bullet. This feature makes centerfire cartridges economical and environmentally friendly for avid shooters. Common examples include 9mm, .45 ACP, and .308 Winchester.