Skull Cannons and fired in the same way as a normal cannon. They have a range of 12-48", Strength 10, Flaming Attacks, Multiple Wounds (D6), and Slow to Fire special rules.
Source: Warhammer Armies Project: Unofficial 9th Edition (v2.2)
Skull Cannons and fired in the same way as a normal cannon. They have a range of 12-48", Strength 10, Flaming Attacks, Multiple Wounds (D6), and Slow to Fire special rules.