Top picture is silver medalist Thomas Paine from the 1896 Summer games, the first year with a shooting competition. Bottom is gold medalist Vitalina Batsarashkina from the 2020 games.
https://www.ssusa.org/content/athens-1896-olympics-the-first-shots-for-record/
I don’t see the difference. One gun, one hand, they are both sighting down the barrel and both have a cap with a visor. Seems exactly the same to me.