B. Gray, My suggestion is that you reconsider your endeavor. For all the money you would pay for the melting pot, molds, lead and flux, you could buy enough leadhead jigs to last you many years. Neither you or your family would be exposed to lead fumes (extremely dangerous) and you don't run the risk of your pot exploding when the lead is accidentally exposed to moisture. Just my 2 bits.

Signed, been there, done that and scars to show for it.