The 27-year-old Steiger cut his teeth at the coastal Sydney club of St Michaels and was largely unfazed by the wind which whipped around 13th Beach throughout the third round.
«I’ve played a lot of golf in the wind so I actually like these types of conditions,» said Stieger, the 2011 Australian Amateur champ.
«The first day it didn’t blow at all and I shot one-under.
«Then yesterday it blew in the afternoon, I shot five-under and then it blew this morning and I shot seven-under.
«So it’s getting better and better, which is good.
«I’m just hoping for another day like this tomorrow; that would be great.»
Shinkwin was another early starter to make a big move on Saturday with a 66.
South African Justin Harding (66), Scotsman David Law (71) and Australian Brad Kennedy (72) were tied for fourth at 12-under 204.
Harding was one of the most improved players in the world last year, winning four tournaments to slash his global ranking from the 700s all the way to 73.
The wind got even stronger on Saturday afternoon, making low scoring much more difficult.
Overnight co-leaders Jason Scrivener and Nick Flanagan both had more than their fair share of troubles, carding a pair of 76s to tumble down the leaderboard to a tie for 10th, five strokes behind Ormsby.
The $A1.5 million men’s Vic Open is co-sanctioned by the European Tour.
In the women’s Vic Open, American Kim Kaufman played two remarkable shots on an extraordinarily tough day as she claimed a two-stroke lead with one round to play .
The strong winds howling around 13th Beach on Saturday reminded Kaufman of her college days in west Texas.
She was able to deal with the conditions better than most, shooting a three-over 75 to be at 10-under 207, two shots clear of Australian Su Oh (74) and Frenchwoman Celine Boutier (69).