Our Great Lakes Navy base has several triwalls of 9mm brass casings, supposedly once fired.
With ammo prices still high, it might make sense to buy those casings, gunpowder, etc, and use a robot to make ammunition and sell it. Certainly I would not want to be involved, due to hassles and liability and lack of subject matter knowledge, but I thought that RogerN may be interested.
Set up a robot to reload the ammo and enjoy the profits.
i