Stop press, I think there are a couple of corrections I need to make. File offline for the moment.
I don't know if anyone else finds the Bolt Action Artillery complicated, its not bad when its just aimed at a squad of guys but once its aimed at a vehicle and if that vehicle has troops inside it starts to get complicated pretty quickly.
I have made up a one page flowchart. I think it's right (might be wishful thinking!) but if anyone has corrections please let me know and I will amend it for everyone's use. Consider this one Version 1!
Hope it's helpful and doesn't just confuse you more :-)
The PDF download is at the link here