Smelted down a half ton or so of wheel weights a couple of months ago and got around to casting a handful of projectiles this afternoon. Was always curious about the effects of water quenching so I dropped a dozen or so bullets directly into ice water from the mold. After shutting down, I tested quenched and unquenched slugs and was slightly surprised to find no difference in hardness - both were in the 9 BHN range on a cabinetree and an LBT tester. From the old days, I was under the impression that WW's contained arsenic which was the agent (element) that enabled lead alloys to harden with quenching. I made no attempt to separated clip on's from stick on's as I have a 2 lifetime supply of material from lead to lino. I was just curious to see if modern day WW's would quench harden. Input???