Not to disagree with slinger, but I will say that wheel weight lead is finicky when pouring the heads smaller than 1/8. The working temps are tighter than pure, and I keep my pure and WW separate and use them both frequently. With pure I get less incomplete collars in small jigs. I also cut the lead off the incompletes with some do-it cutters and this leaves the finish on the hook, whereas melting it back off frequently removes the finish.