Maybe in Victoria, but in SA there is a real push to "severely restrict" these cartridges and rifles.

Ranges have reportedly been written to by Police informing them that these rifles are not permitted to be used on the ranges.

Police have said justifying these rifles in SA will be hard. And that using a justification of interstate and international hunting will not be allowed.

New rifles and PTAs won't largely be permitted.

And if you already have a rifle in these chamberings, and you can't hunt with it, nor shoot at a club with it, it will also be history. No legal requirement to compensate people for confiscations by the State governments, unlike the Commonwealth Gov't, so if it is confiscated all you will be able to do is try to sell it "somewhere".

As for people "in the know", I have been talking to and corresponding with some of the people whom actually attended the meeting with SA Police last week, so NO, "NOT just rumours."

As for not gaining traction it is already happening.