I agree...you really can't beat a Lee Production Pot. For molds, you have a few options. The main one is Do-It Molds (
http://www.do-itmolds.com) or Hilts (
http://www.hiltsmolds.com). Hilts seems to carry more saltwater sizes.
You can also make your own mold from Plaster of Paris. But if you do, make sure your coat the mold with a glossy enamel paint prior to using it or else you'll get a dull coat on the lead.
Most people use clay to make the design and then let it dry. Then pour plaster 1/2 way covering it and let that dry. Then add a thin layer of Vaseline to the top and pour on the second half of plaster and let it dry. Pull the halves apart, wipe off the vaseline, remove the clay design. Coat with glossy enamel (black) and let the paint dry. Cut in your sprue holes and you're ready to pour!
- Erik