Kimberly Rhode of the United States bagged the second Olympic gold of her career in the double trap shooting event on Wednesday.
Rhode, who won the same event at Atlanta in 1996, scored 146 points to pip South Korea's Lee Bo-Na by a point, with China's Gao E third (142).
Bulgaria's Maria Grozdeva won the 25m pistol event with 688.2 points.
The Czech Republic's Lenka Hykova claimed silver while Irada Ashumova of Azerbaijan took the bronze.
Hykova scored 687.8 points to edge out Ashumova, who finished on 687.3.