Are you into black powder? That could make a difference.
Black powder is a venture in itself. It is smoky, stinks, and fouls the gun and hands. You cannot see you bullet strike down range most of the time because of the smoke screen you have laid down. You don't measure velocity in feet per second, but miles per hour.
But then, nobody pesters you for your empty brass at the range.
Bottom line, you interested in these for shooters? Or put back for sale later at a profit?
My suggestion is, if not wanting shooters, pass up the deal. You may not live long enough for them to appreciate in value enough to make your efforts worthwhile.
Bob Wright