[CherokeeT]

I'm assuming from your brief statement that you are casting from the iron pot and also melting your bulk lead alloy (wheel weights, pipe, etc) in the same pot. If that works for you, keep it up. If you want to use an electric melter with the bottom pour spout (like the Lee 20# pot) for your bullet casting, you should continue do your bulk lead processing/melting/fluxing separately in the iron pot and pour the cleaned lead into ingots. For the electric melter, you want the lead alloy (the ingots) to be as clean as possible so your pot and pour spout do not get covered/clogged with trash from the lead and so you get bullets without includions (trash).