I guess I'm the oddball here. I use an old cast iron dutch oven and melt my lead in that with it sitting on a fish cooker burner. Bought a ladle off eBay and skim impurities with it and use it to fill my molds.

I use wheel weights for pouring jigs. I pour 1/32 and 1/16 oz jigs primarily and bell sinkers with swivels in them. I do pour some ingots and decoy weights as well. Getting the mold up to temp is a big deal for pouring any of my stuff. I always pour blanks until the molds fill out.

There are some places you can get some good scrap lead, such as flashings or plumbers lead. Usually scrap lead is in a bigger piece and has to be cut down (hence the using of a dutch oven style cast iron pot). I can get a big piece of lead in that. I use the plumbers lead and flashing for my wrap around decoy weights as it is softer lead. The wheel weights are a hard lead but they will pour a jig head for me just fine.