Leaderboard

Water quenching may gain you as much as one BHN. Adding a small amount of tim may also gain you one BHN. The tin may also help your lead flow better which will not help with your flashing issue. When I really want to make an alloy harder I use super hard from RotoMetals. It's a bar of lead that's 30% antimony. You could add pure Antimony but it will not melt till you get it over 1000 degrees. But the super hard has already been alloyed together so will melt around the normal temperatures for lead. I have a lead hardness tester that I use when I'm casting bullets. So I like to mix up a batch and then make an ingot once the ingot it is cooled I test it. When I reach the proper hardness that I'm after, only then I will start casting bullets.