The Encore can handle anything up through the belted magnums, after that the chamber gets too thin. Match Grade Machine and Bullberry are the man aftermarket barrel markers here in the US.

The Desert Tech might be an issue in Australia. I recall there being a concern of them being added to the list of banned guns but don’t know if it ever happened.

Dakota still lists the Traveler, not sure that means you can get one. A number of years ago there seemed to be a glut of them on the used market at good prices (still expensive though). Wish I had the cash at the time for one.

Edit: Found the link to the issue with Desert Tech in Australia, seems NSW specific and not really sure on final status.

http://forum.snipershide.com/threads/australian-nsw-members-read-me.6568533/