Just picked this thread back up again...

Back in the day, all my Dad and I cast minnies with was plumbers lead (pure ?). No added tin... We never shot round balls out of the Zouave, as we were happy with the minnie balls. Wish we had...

I used SOWW alloy to cast the minnie balls to use now, but I have not had a chance to get to the range with them yet. Same mold, so I'm guessing they should work just fine.