>>64211034
>I'm also debating about out of fashion cartridges like 7.62 Tokarev for the same reason.
Don't. We're further along in propellant tech than ever, moving out into a more developed solar system means the F-22 will be closer to the Tokarev than whatever munitions come out of the developments since then.
>My heart says 5.7 is the caliber of choice. Lightweight so you save on the cost to ship it to Venus.
It makes more sense to try to move production facilities "up" from the nearest places where it can be scaled. Do you have propellant synthesis from hydrocarbon feedstock? Equally, metal rich locales inclusive of asteroids along with small scale, forward production will favor different firearms for "boutique" use cases (you are not fielding hardware for a national military).