Dave at Geneva Stop lent me this morse tank.
It loads 196 feet!! of 16 or 35mm, but dev times are longer. There is not much data out there on times other than 4x the usual 5 mins (generalising). Its easier to load and use than a Lomo.
Also, it occured to me that it would be relatively straight forwards to design and build a tank this way that held 400ft.