Reloading or Remanufacturing
If a casing is reloadable, it must be brass. Reloading a brass casing is the process of cleaning the residue off it from when it was fired, correcting any slight dings, bends or creases, refitting a primer, adding new propellant, and a new projectile. This process yields a usable cartridge from a casing that has already been fired. Hence the term “reloaded ammo” or “remanufactured” ammo.