Glad to help.
Sort of bought that on an impulse, but glad I did.
It's a lot slower than torching off one of my many BP revolvers, but something very deliberate & satisfying about it all.
I think the .50 is probably the way to go, unless you already owned a .54 or have the moulds. You might have better luck with a .495 if you reduced the patch thickness down to .010 or less, but I have a set of .490 moulds anyway. My Lyman Trade rifle (also in .50) ironically prefers the .495 RB over the .490 so now I have to buy a mould for it.
Let me know if there's anything else I can help you with!