Rossiter siblings shoot into Tokyo mix

Rio Olympian Jack Rossiter did his best to win a spot alongside his sister in a second Australian Games squad with a gold medal in Thursday's 50m three position rifle at the Oceania Championships in Sydney.

Shooting in gusty conditions, Rossiter set an Oceania record of 451.8 points to win gold and earn a quota spot ahead of Alex Hoberg (445.3).

Younger sister Victoria had done the same earlier in the meet, with the 22-year-old relieved after falling short of Hoberg in the 10m air rifle on day one of competition.

"If I get selected, I believe I will be able to perform much better than I did in Rio," Jack Rossiter said.

"I will know what to expect at an Olympics, how to prepare and how best to train."

Fellow South Australian Emma Adams also claimed a gold medal-quota score double, winning the 50m three position rifle (444.7) well ahead of Elise Collier (434.4).

It would be Adams' first Olympics if selected, having shot for Australia at the 2014 and 2018 Gold Coast Commonwealth Games.

The men's and women's trap finals will highlight Friday's final day of competition.