Pete,
We can pretty much own anything, aslong as they are not semi-auto or pump action, but you are aloud to have pump 22's and pump rifles such as remington 7600 and the like. You can get a licence to own a semi-auto but you must be employed as a pro shooter or a farmer.
Roo meat is good eating, very high in iron and very low fat, must be careful to not cook it for too long, similar cooking as to Venison, I usually shoot for dog meat, on permits off course!
As to snow, we dont get snow here, up a bit higher we do, it is the middle of summer here at the moment, my Wife is American, and she just had her first Christmas without snow, she couldnt get over it!