[caz223]

Unless you're seriously made of money, or have some awesome connections, that ammo is exceedingly expensive. Therefore, the brass will be tough to locate. On the upside, people who must use NT ammo most likely don't reload it.
Maybe someone here has a stash of it they sorted out of their brass, as it will jam up progressive presses. A commercial reloader?
Maybe you would have luck if you posted a WTB: WIN or FED NT .45 brass in the reloading FS/FT section. Who knows.
IIRC the FED cases at very least are crimped in and must be swaged before use.
Not sure about the SC WIN NT cases.