fouserchris,
There are round balls in .451", .454" and .457" at my local shop. Before you cast up a bunch, try the one that seats with "just" a small ring of lead shaved on the front of the cylinder mouth when you use the revolver's seater/rammer gizmo.
Crisco is wonderful stuff for BP arms. You really do not need to mix wax with Crisco to seal the revolver chamber mouths just prior to firing to prevent "Chain Fire."
I am not a guru on rifle kits. Stick around and some of the other very knowledgeable folks resident here will give you some good advice. Good shooting.
Adam
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Adam Helmer
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