This is just off the top of my head ,I haven't bothered to look it up but as an overall percentage probably not much really. It varies greatly state by state, Victoria probably has the easiest crown land hunting, NSW has a licencing system for state forest hunting in quite a few forests, I domt think Qld has any public hunting areas and I think SA is very limited or has none, the NT has only 4 public reserves and WA I know nothing about but its probably got none as its a hard state gun law wise.