Jon Riley and Tony Carolan both fired 7-under-par 65s to shoot into first place on the leaderboard but still find themselves in hot water as nine other players are within three shots of the lead.
Overnight leader Jason Norris of Victoria could only manage a 1-under 71 after going 67-69 in the first two rounds but is only a single stroke back heading into the final round.
A group of four players are just two off the pace with one round to remaining. Jens Nilsson, Matthew Hazelden, Marcus Cain and Michael Wright all are in at 8-under.
Adam Fraser, Craig Carmichael, Shane Tait and Terry Price share a tie for seventh, at minus-7, and are still in the hunt being only three back of the leaders.
Four more players are tied for 10th at 6-under and a large group of six stand at minus-5.