Cartridge

A self-contained unit of ammunition with primer, propellant, bullet/shot, and casing.

Cartridges or shells containing primer, powder, projectile, and casing.

The internal diameter of a firearm’s barrel or the bullet’s diameter (e.g., .223, .308).

Ammo with a primer located in the center of the cartridge base, used in most rifles and handguns.

The gap between the cartridge base and the firearm’s breech face; improper headspace can cause ma...

A feature on some bolt-action rifles where the magazine floorplate swings open for quick unloadin...

Ammo where the primer is inside the rim of the cartridge (e.g., .22 LR); commonly used for small ...