Arsenic has to be present to make bullets harden when water quenched, .25% is enough to make them harden. Just add a few ounces of shot the next time you cast. It works with wheel weights it would be interesting to see what happens with #2.I've seen BHN on water quenching wheel weight bullets but have never seen a BHN on water quenching Lyman #2. Anyone have a number? Will it be higher than wheel weights that have been water quenched? Thanks in advance.