Norris, who was just one off the pace going into Friday's round, saw overnight leader Terry Price shoot a 1-under 71 and fall into a tie for second.
Price is joined by Shane Tait, Marcus Cain and Michael Wright, all at 7-under par for the tournament and all four are from Queensland.
Just two shots back are a trio of golfers that stand at 6-under. England's Matthew Hazelden (68), Craig Carmichael (70), and Justin Welsford of Victoria (69) will give Norris chase on the weekend.
Dean Alaban, Scott Strange, Brad Lamb, Neven Basic, Jens Nilsson and Brendan Chant sit at minus-5 and in a six-way tie for ninth.
Seven golfers finished at 4-under and a large group of nine completed round 2 at minus-3.