Thanks, that's a real help ....seems to be a pretty comprehensive description

...a couple of points (I'm sure there will be more!):

1. I've got a powder flask that came with the ROA (though I don't know how much it measures), could you recommend a suitable powder measure (I can't seem to find anything)? (I have got digital scales that I use for reloading, and this looks useful http://www.curtrich.com/BPConversionSheet.htm)

1. Fillers - once you've decided on a powder charge, how do you know how much filler to add to just leave enough room for the ball? (Does the ball compress the powder & filler?)

2. I like the idea of pre-prepared phials for powder charges, found these on e/bay (item no. 121036930043) - is this the right sort of thing? (sorry, but it wouldn't let me use a link)

3. Pyrodex P or Triple Seven, which would be best to start with?

(btw, although I've bought the gun, I've got time to shop as it's still at the dealer while I wait for a variation to come through )