Laws vary a great deal from country to country.

I have folks that come to pick up flintlock rifles from European nations. If they bring them in on the airplane coming back home, the tax is very low. If I ship them the tax is super high. So high that airfare, round trip, is cheaper.

That's why they come get them.

I have no idea how it would work with the Australian government. About 20 years ago a couple from New Zealand came and picked up 2 flintlocks from me. It was not a problem for them, but a 303 Lee is classes differently then a muzzle loader in most countries.

England has become impossible for all practical purposes. France and Germany are not too bad. Poland is supposed to be easy and Hungary is super easy. But England and all the countries it has influence over have become harder and harder (socialism at it's worst)with England itself being impossible. I never thought I's see the day, but now it's easier to get hunting rifles into and out of Russia than it is England.