Scott Jamieson in leap to third
Jamieson flew out of the blocks with seven birdies - including four on the spin from the sixth hole - to break 30 for nine holes for the first time in his Challenge Tour career.
He picked up one more shot on the back nine at Zhailjau Golf Resort in Almaty to finish on 11-under, two shots behind joint-leaders Federico Colombo of Italy and Australian Daniel Gaunt.
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Hide AdJamieson will be joined at the weekend by his fellow Scots Eric Ramsay (seven-under par), George Murray, Elliot Saltman (both six-under) Callum Macaulay (five-under), Jack Doherty and Jamie McLeary (both four-under).