Victoria would be another state that couldn’t have one, you would be able to shoot from border to border 
.56 billinghurst requia?
According to Wikipedia it’s the predecessor to the Adler!
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Close enough, it is the 52.
Told you it would be easy 
It is one weird looking cartridge
Sure is weird looking, this games teaching me all sorts of good stuff.
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That makes 2 of us.
375 rimmed belted magnum?
Nope, that’s not it!
375 Ruger?
Na, not that one mate
Lol am I in the right area?
No mate.
This is kind of a kids round
Lol .55 Boys anti tank ?
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yeah lol, thats the kid!
It had me beat as it was a belted case hence why I was in the 375 range.
OK this will test you…
Is it an air rifle shotshells thing?