Basicly, how does the ammo system work? I find ammo all over the place and it seems to add ammo for all my weapons. As if all weapons share the same ammo. But some guns still have more ammo then others. Why is this? I have a guess, perhaps more powerful guns just take up more bullets with each shot? I don't know.
And does it make sence in this game to use a weaker gun to preserve ammo?