KInG wrote:Matt is right... if you target any vehicle, you determine the armour rating you are shooting by your position to it, which fire arc you are in. If you can't see any of that side, and can only see other sides, then then owning player gets a 3+ save to represent the acute angle you're shooting at and the increased possibility of the shot glancing off.
I don't think so. The Hive Guard isn't hitting the side it can see and not the one facing it. The Impaler Cannon rules say that it can shoot any target in range regardless of
LOS. The target can only count cover they are in or touching and only if the cover lies between them and the Hive Guard. It also says that; "Vehicles are always hit on the armour value facing the Hive Guard." so the vehicle if it moved flat out would get a 4+ cover save, not 3+ for the facing benefit.