Status of fire effect calculation changes?

[Xerxes77]

Newbie learning the ropes here. Correct me if I'm wrong, but aren't modifiers handled the same (i.e. added one after another) across all Tiller series of games?
Is the effect more noticeable or worse in the PB titles?

(While we're on this interesting topic, I definitely wouldn't mind seeing a couple of text lines included in the quaintly terse Fire Report dialog, or anywhere for that matter, to get a clearer breakdown of which modifiers are applied when firing, in what order, etc. In fact, any UI improvement that minimizes the time spent scouring the manual for info, or trying to figure out an in-game restriction or result, would be gold in my book!)