Nineteen-year-old Smith, who is set to make an Olympic debut for the United States later this year at Tokyo 2020, hit 55 of 60 targets in the final at Trap Concaverde.

Smith hit the first 20 targets and could not be caught from there, with Britain's Amber Hill finishing the runner-up, with a score of 52.

Danka Barteková, the Czech bronze medallist in this discipline at London 2012, was third, hitting 43 of 50 targets.

Olympic silver medallist Chiara Cainero was host nation Italy's lone representative in the final, placing fifth.

Egypt's Mehelba took the men's title thanks to hitting 56 of 60 targets in the final.

Mehelba's score was one better than American Vincent Hancock could manage, with Hancock's final shot off-target.

Italy's Tammaro Cassandro - an individual runner-up at the 2019 World Championships at this very venue and the best qualifier - placed third, hitting 45 of 50 targets.

The ISSF Shotgun World Cup continues tomorrow, with men's and women's team skeet finals set to headline proceedings.