Well, I did "That Lucky Old Sun", after getting the finder, and arming Archimedes II. Now, no matter how long I wait, I get no ammo, no chance to fire the weapon. Do you know if this problem already exists? If yes, is there a fix, or something I can do to remedy it? Thanks in advance.

I'm not a 100% sure but try this suggestion.
If you have the Euclids C Finder go to Helio's Power Plant and have the gun drawn. Somewhere around there you will get only 1 shot from the weapon.

I had the weapon with me before i armed Archimedes II.

Joey

It only fires once every 24 in game hours.. All in all it's not a very good weapon. Just kind of fun to try out but nothing you can rely on anything for.