Griz, and other interested parties, there's another board that at least Russ and I frequent, maybe more, that is all about casting lead bullets (though they spell it Boolits. If there's anything you want or need to learn about casting and more, you'll find it there.
It might be better just to send you there, rather than try and type it all out, cause I don't type that good or fast.
http://castboolits.gunloads.com/As far as fluxing goes, a pea sized chunk of wax works well, as does various other materials. I sometimes use well dried sawdust as well as kitty litter. Add it to a pot of hot lead and stir. It'll probably ignite, so it's just easier to put a match to it and burn off the smoke ahead of time. Stir it good, and then scrape off the sludge. You probably want to do this at the start and then half way through a 10# pot.
Fluxing has a duel purpose, to help the alloy mixed, and to get the impurities to float to the top. Myself, I feel that the stirring brings more crap to the top than the flux, but I still do it.
If you have more questions, feel free to ask.
