From ForgeWorld Imperial Armour 2 2nd edition. The Space Marine Super-Heavy tank, Typhon.
It's Dreadhammer cannon has a range of 24"/48".
It specifically says that it has two ranges depending on whether it moved or not.
If it moved in the preceding Movement phase then 24". If it did not move, then 48"
This rule was the same in the IA Apocalypse 2013 book..
Rulebook p94 (and also the Apocalypse book) states that when shooting, a Super-Heavy vehicle is always treated as if it was stationary even if it did actually move.
I think that since the Dreadhammer has a specific rule, that would trump the rulebook rule.
You thoughts?
Anyone disagree?