What mold do you use to cast. I'd like to start with round balls, as those aren't as picky about being pure lead as full-bore bullets.
The last lead that I ran, was in .495. Not sure to what you are refering to on the pure lead but I only run as pure as I can get. In the past, I ran alloy with a Poly-Patch as well as .445 alloy MaxiBall with a MaxiPatch. The only molds I have left, are Lymans and older TC's ...
Be safe !!!