[Endoperez]

Orcish Empire mod has catapults IIRC, and in Kami-mod (I think) the musketeers shot something that seemed to be banefire-boulders... I quess the sprites were a litte-bit too large. You should check them, though, just in case.

And remember, you can always replace Siege Engineers of Ulm with catapults. And even Boulder can be used as a weapon, it flies far enough it the catapult's strength is high enough... You just have to be sure it has no other weapons!