Let's see with 6.3 people psm in Australia and 73p psm our population is 14 times more than yours it's also less likely you'd even kill someone or even see one.
Seems like crime gas risen since ban
gun crime australia since ban - Google Search
Crime has risen, but if you read further into the article, you will see that firearm-related deaths had dropped by almost 50% from 1991-2001, which was when the buyback occured following the 1996 Port Arthur shooting. Something which worked IMO, the numbers show a decrease in firearm-related violence/deaths. There is not necessarily a correlation between a rise in crime and the ban.
You are right in the sense that our country is far less densely populated than the USA when you look at the numbers, but about 95% of our country is uninhabitable. So the coastlines are densely populated, probably just as much as most cities over there in the states.
Have I seen guns on the streets of Australia being used? No.
Will I ever see it? Probably not.
The day I need to carry or own a gun to protect myself from the rest of the population of Australia for the simple fact that they are all allowed to own guns is the day that I move out of this country.
Maybe Vanuatu, I hear the weather is pretty nice all year around