I ordered a Barrett 98 Bravo for this very reason. I'm told 338 Lapua is already banned in SA and it would be coming to Vic soon. I don't believe this has anything to do with the older calibers.
I was told from a knowing source (the badged variety) that it will be harder to get long range military calibers.
I think pump rifles are gone also.
I was advised to get in soon ...........