It is a known internet fact that no case can EVER be TOO shiny and that shiny brass definitely makes you an infinitely superior shooter

Shiny, shiny, shiny...

Incidentally, my girlfriend is a silversmith and whilst I was loitering in the bullion supplier in Birmingham last week while she conducted some business, I discovered they sell reasonably priced 2mm stainless steel media for semi-precious rock tumbling, it turns out this is the perfect size for cleaning .17 and .22 Hornet cases.

Unfortunately this means that the .17 cases are now very clean inside and out and I no longer have any excuse not to continue with load development for the hateful fiddly little beast