I'd like to see it, I'd be interesting. Ballistics behave differently and sometimes strangely in different atmospheres and/or environments or lack there of. On moons you could essentially shoot yourself in the back if you are high enough up. On Mars aerodynamic drag and wind deflection would be minimal, rounds would travel further than it would on earth and impacts would be higher. Explosions would be less effective at a distance, the thin atmosphere would be a lot worse at transmitting an overpressured wave, shrapnel would travel quite a bit further. This goes both ways of course...