So, I got Lyman's 3rd edition..and noted a rather glaring contradiction regarding fluxing. There's and entire section devoted to the metallurgy of lead alloys, and it basically (after much technical explanation) says that fluxing has nothing to do with keeping bullet alloys mixed. Then on pg 57, where it gets to the meat of things.. It says that the greyish 'scum' on the top of a melt is tin and you need to flux to re-incorporate it into the alloy. ??? Anybody have any thoughts on this? My thinking is that the 'greyish scum' is simply oxidized lead... On a related note, I got some marvelux flux.. and loaded up my pot.. Seems like marvelux is perhaps a bit harder to deal with than simple wax.. sticks to my spoon and dipper like crazy..