The Cessnock shooter and three-time Commonwealth champion took out the first of this year's domestic nomination events in Brisbane over the weekend.

However, with a new working role as federal MP for Hunter, Repacholi knows preparations look much different going into Paris compared to previous Games since debuting two decades ago.

"This will be the hardest one I've done, just purely because of the role that I'm in now. I have to change training to suit that," Repacholi told the Newcastle Herald.

Repacholi says claiming gold in Sunday's final for the men's 10-metre air pistol "doesn't matter apart from having a mental edge over everyone you've beaten".

Scores from the qualification rounds count towards Olympic calculations and carry over throughout the four-part series.

Repacholi, Queensland's Matt Sydes and Western Australia's Bailey Groves are all locked together on 570 points after the opening round.

"It's good to have it [Olympic qualification] started," he said.

"And it's unique three of us shot the exact same score, it doesn't usually happen like that."

Sergei Evglevski, Alamdar Dastani and Scott Anderson sit the rung below on 559 points. Lucas Wang (557), Bruce Quick, Benjamin Paulino (555) and Damian Dowling (545) round out the Aussie top 10.

Next up is a double header in Sydney in February before returning to Brisbane for the last stop.

The three best-performed shooters book tickets to the ISSF Final Olympic Qualification Championship in Rio in April (11-19).

Only one, the highest total overall and coupled with securing a Games standard referred to as QROG, will be selected to represent Australia in the men's 10m air pistol for Paris (July 26-August 11).

If not recorded in Brazil, a second chance at the QROG may be afforded to the No.1 ranked shooter at a World Cup event in Munich (May 31-June 7).

Repacholi says the QROG mirrors Games times set for swimming or athletics: "we've got to finish inside a certain percent at an event which is Olympic standard".

The exact percentage depends on the number of participants, but Repacholi estimates "top 30" would likely meet the QROG requirement in Rio and says that's "very achievable".

Having been to Olympics in Athens (2004), Beijing (2008), London (2012), Rio (2016) and Tokyo (2021), Repacholi describes the Paris qualification process as "similar" but ultimately "fairer than others".

"Anyone can shoot in this and have the opportunity to make the team," he said.