I'm trying to play catch up on making usable alloy. The range scrap from our pistol range has a high proportion of hard commercial cast bullets. That plus the antimony in bullet cores make for a shootable alloy. The downfall here is there is no reliable method here for testing hardness. I am convinced it's necessary to find out what the scrap is before adding anything to harden. Of late some experiments have been done with Super Hard. Perhaps a better use of time would be to find a source for scrap other than from the range. One bias here is not to buy or get anything in ingots. Ingots show up where zinc wheel weights are in the mix. That does not work. I did not read about this in a book but being peeing on the electric fence. Also, I need to get an accurate way of testing lead for hardness.