If you want to melt those WW's the easy way get a cast iron pot and a casting thermometer. Throw as many as you can in the pot, don't worry about sorting. Melt everything from 650 to 700 degrees and nothing will melt but the lead weights. The zinc, steel and whatever else can be skimmed off with the clips. I have always done it this way and have never sorted WW's or had contaminated lead.
I don't ever remember being absent minded.