Firstly thanks guys for your replies and assistance. I have written to NIOA today to get an update on when they can supply Lapua in 308/7.62 and 223 / 5.56. Additionally Hornady , Federal and Starline are all available here in the interim. Ive never seen ex military brass in those cals available in Aust but thats not to say thats not possible .
As a matter of interest. The Australian forces mainly use the Austrian Austeyr 88..Bullpup design, 5.56 rifle but also 7.62 in various fully automatic and Sniper rifles based on the Rem 700.They also use 338 Lapua and 50 BMG but mainly for special forces ie , S.A.S. Fortunately we are well served for projectiles with Sierra, Hornady, Barnes, Nosler, Berger etc and the local suppliers like Woodleigh and Winchester Australia.
Euro brands Highland , Sellier Belliot, Norma and RWS are available in either factory loaded rounds or projectiles .