Fallout 3: The Pitt ammo press
Showing the ammo press from the DLC The Pitt, it's used to convert ammo you don't need/use to more useful types. You can only use 10mm, 5mm, 5.56mm, .32 caliber, .308 caliber, .44 magnum, shotgun shells and scrap metal. It doesn't work with energy weapon ammunition (obviously).