Another one I missed. The mortar aside, my experience with ‘working’ ordnance has been deeply disappointing, from the pitiful match-stick-firing die-cast guns of unknown calibre to the missile on the Dinky Spectrum Pursuit Vehicle from Captain Scarlet, which flopped onto the carpet on release, which was in any case academic as it invariably fired prematurely (I only discovered the metaphorical significance of this much later). Only fractionally better was the Britain’s Revolutionary War cannon, which fired tiny ball bearings less than its own length. The same company’s medieval ballista comfortably exceeded this, while still failing to meet reasonable expectations of what such a weapon should accomplish. I have only seen one weapon of this approximate scale that seemed to come close to displaying the power of its real-life counterpart: the catapult by Hausser / Elastolin that I acquired as an adult and still like to play with. Mine is the 40 mm version. I would imagine that its 70 mm counterpart, assuming it exists, is more impressive still.