DC...good stuff there. I intend to remould these ingots, combining them for a more uniform cast. That idea about adding tin is good. I believe I would like a final BHN in the 17-19 range. I am going to use a towel and air dry the boolets, purchase a hardness tester, and heat treat if required.
Do you make a "VVVVV" shaped ingot mould (instead of the single "V" shaped stand alone ones)? It would go well for me to have a four or five ingot moulds in a single setting, each flush with the adjacent mould and seam welded down the long axis of each interior "V", such that a continuous pour could occur. I would cut a small "u" channel between the interior "V's" of the mould with a grinder so liquid lead could spill over to adjacent cavities. Something to consider. I don't weld...yet, but I am a cutting and grinding "madman".