While there is a lot of good information given here, keep in mind the OP is a beginner and DownUnder so many of the options are simply not readily available.
Mate, keep it simple.
Get a good .22, don't skimp. CZ's are readily available. Top of range US made are pretty good as well. The Chinese CZ copies are accurate but are rough mechanically.
In centrefire, start with the 223. Easy and relatively cheap to buy good quality ammo until you are ready to reload and then components are easy to get. Accurate in a good rifle and the low recoil will enable you to hone your skills before going bigger.
If you are just using it informally on the range get a heavy barrel Tikka or a Savage. They will not disappoint you.
Don't skimp on the mounts or optics either.
Mate, keep it simple.
Get a good .22, don't skimp. CZ's are readily available. Top of range US made are pretty good as well. The Chinese CZ copies are accurate but are rough mechanically.
In centrefire, start with the 223. Easy and relatively cheap to buy good quality ammo until you are ready to reload and then components are easy to get. Accurate in a good rifle and the low recoil will enable you to hone your skills before going bigger.
If you are just using it informally on the range get a heavy barrel Tikka or a Savage. They will not disappoint you.
Don't skimp on the mounts or optics either.