Well, to be honest, I just took them from HTW, and haven't changed that - the whole projectilestats file has been rewritten for HTW, so don't be deceived by what the projectile is actually called in the prod file, its characteristics could well be very different. In fact I have a small problem arising now that I've resurrected the catapult for the Romans, as the heavy slingers have appropriated the flaming catapult ammo for attacking wooden walls, so as a result the catapult is now useless against wooden walls (it throws a single "pot of burning oil" - it is effectively as strong as a single heavy slinger....) So I need to redefine the catapult's own flaming ammo. One day