peter:
Do we assume correctly that your government's definition of 'front-stuffers' includes original cap'n'ball revolvers like the Kerr?

If so, I would certainly recommend grabbing something nice (read 'British') while you can. They are a hell of a lot of fun! 54-bore is the way to go!

I'm still waiting for the perfect BP substitute, and would like to see a low-pressure bulk-equivalent smokeless like the old Shultz powder, but non-hygroscopic (unlike Pyrodex et al)!. I hate fouling-up original vintage revolvers with brimstone and sulphur salts! I've been following the Black Mag -> CleanShot -> 777 evolution with keen interest, but they seem bloody slow at arriving at what I want! Geez, how hard can it be?