We have not been able to get Remington 303 brass for about 10 years here I normally get up to 10 reloads using AR2209 annealing the necks with the AMP annealing machine, TTL - fls them all now as it was too painful just neck sizing and keeping it separated for each 303.
I have one brand new packet of Remington 303 brass that I'm keeping, I opened it up, annealed the necks after neck sizing them as some necks were out of shape.
Ron, if I ever decide to travel to AU I know who I'll be looking up, you have some awesomely cool toys/hobbies! Reminds me of me a loooong time ago...