Tarawa,
Is this for the Kodiak?
I will post some black powder solid charges for revolver I get some years ago. The trick is that when you compress the charge you brake it to powder again.
I think it will not work on the Kodiak because the breek style, like a "patent breech".
What works for me is the use ot preweighted (and measured) charges in a plastic container like the ones used for pills.
I could not find a way to keep my fingers ungreased when I take the bullets.

Martin