First-round leader Kurt Barnes stumbled to a 2-over 73. He stands alone in second place at 4-under-par 138. Stuart Appleby and Brett Rumford share third place at minus-3, after matching rounds of 70 on Friday.
Paul Gow carded a 2-under 69 to join Anthony Painter (70) at 2-under-par 140 in a tie for fifth. Australians are dominating the event as 34 of the top 37 through two rounds are Aussie's.
Pampling had a solid front nine as he started his round with a birdie at the third. He then converted a birdie try at the par-4 sixth and made it two in row as he birdied the seventh at The Australian Golf Club.
The Queensland native birdied the par-4 ninth to make the turn at minus-8. Pampling tripped to a bogey at the 11th, but atoned for that error with a birdie on 13. He parred his final five holes to remain four clear of the field.
'I think we were fortunate in that the first few holes it wasn't as strong as it is now,' said Pampling, speaking of the wind. 'It was virtually a brand new golf course, there were whole new numbers. You just had to trust yourself that the numbers were right. We had not played it in this wind at all. You really had to trust your numbers and go ahead and hit the shot.'
Barnes had things going his way as he played his first seven holes at 1 under thanks to a birdie at No. 5. However, he faltered to a bogey at eight. The Australian bounced right back to birdie the ninth.
Barnes moved to 8 under with a birdie at the par-4 12th. He stumbled to back-to-back bogeys from the 13th. His slide continued as he struggled to a double bogey at the 16th. Barnes kept moving in the wrong direction as he bogeyed the 17th. He managed a birdie at the last to get return to minus-4.
Stephen Leaney, Greg Chalmers and David Bransdon share seventh place at 1-under-par 141. Alistair Presnell, Anthony Gilligan, Richard Green, Peter Lonard and Nathan Green are tied for 10th at even-par 142.