if you do pipe in a cast iron pan over an old BBQ grill you can spoon off the crap and get pretty good lead. its about a 30% weight loss but its till useable lead.
SW
I actually found an old stainless steel tea kettle that could hold about 15 lbs at a time. I chopped the pipes up and hammered 'em a bit to get them in there, but it only took a couple minutes. And, they did clean up fine and it was some nasty stuff to start. I'm just not sure of the resulting alloy. I used a MAP torch to get some of it started in the pot and cut it down to fit better. I have been thinking about getting a harness tester from Lee.