Sidhu shot a combined score of 626.2 (386+240.8) to claim the top honours.
This was Sidhu's second successive international gold after she, along with Jitu Rai, claimed the top position in the 10m air pistol mixed team event in the ISSF World Cup Finals in Delhi earlier this month.
Among other Indians in fray here, Deepak Kumar won a bronze medal in the 10m air rifle event.
London Olympic bronze-medallist Gagan Narang finished fourth in the same event, while Ravikumar ended fifth.