Those have a some collector value, or if your a crank like me, you use them! I have seen roll crimpers as pictured sell for $100.00 plus. I'd be scared stiff to use the hulls, but you can get once fired gold medal Federal hulls. I load them with blackpowder, plastic burns through with black powder, paper lasts longer and is cheaper than brass. Brass doesn't roll crimp very well either.