The Siege Weapons are trained in their own Barracks: the Siege Factory. They are not built by Builders that will have ammo on it.
Archers have quivers filled with arrows but never run out of them. Balloons never run out of bombs, too. Dragons with their fiery breath but they never get tired of doing it over and over again. Minions. What else that throw/release projectiles...? Also, kinda annoying to let the weaponry have ammo as you have to keep tapping on them to reload.
I'd rather say no to the Barbarians rushing into battle. As said in my idea, they explode. That includes the Barbarians manning it to die with the explosion.
Read the post more carefully, their slow rate of fire acts like their reloading procedure.



