I'm not familiar with the SA laws so can't compare but there isn't too much too it here in VIC.
Minimum calibre as above.
Hog season:
Opens 30 minutes before sunrise on 1 April
Closes 30 minutes after sunset on 30 April
Game permit.
That's it.
Good practices are the same here as anywhere.
No requirements for fluro gear like NSW but you'd be wise to wear something of course.
Here is a picture of deer shot placement if you're not familiar with that
- deer_shot_placement.jpg (66.04 KiB) Viewed 9974 times
Be aware other hunts may be in the area so act accordingly and off you go