Not sure how far afield you're willing and able to go, but Armageddon Games in Lismore (about two hours south of Brisbane in NSW) has a couple of events per month. I believe our Scourgewar preview is set for the 28th. Details can generally be found either on the UDE website or here:
http://www.armageddongames.com.au/
on the rare occasions the website is up to date.