Does anyone if there are still many of these going about? I have a belt full of Ely Grand Prix paper cartridges, which I think you can still get? What particularly interests me though, are the 'Dust shot' and Lilliput cartridges. I imagine the Lilliput would've been designed as a light game cartridge, & the dust-shot for vermin control around buildings. Anyone tell me if I'm on the right track with this thinking?