Hi Porker,
I have a very clean Mauser 6.5 x 54 for sale. Everyone says it's quite a nice gun, but I have not received a reasonable offer yet. I was asking $8k, would take $7k if the transaction could be done smoothly. That being said, I have no idea about sales from the US to Australia. Just throwing it out there. Here is a link to a thread that a friend in Tennessee started:
http://forums.nitroexpress.com/showflat.php?Cat=0&Number=307432&page=0&fpart=1&vc=1

Best of luck with your gun hunt.

Colonel C (David)