I can say that WW lead isn't as good for the smaller stuff, but doesn't need to sit in the corner either. I use a cast iron pot, stew size, to clean my lead, with a coleman stove on high for a heat source. Easier to clean when needed. Then I add 1 or 2 bars of WW and 1 or 2 of pure lead and pour away. The smaller the head, the more pure I use. Really small I try to use pure only. WW lead on my 1/16 barbed heads for using plastics will pour with ww but have to be hot, both pot and molds. I run mine on 9. Too cold and they come out incomplete. Try a 50/50 mix and go from there. If you pour it back into ingots when you change, write on the ingot what the mix is. Saves time and pure lead.