My cast range scrap ingots use to vary in hardness. Cast ingots happened to be from lots of either jacketed bullets, large lead pieces and hardcast bullets, or small range pieces that remained after I washed the debri from it. Ingots were separated in groups by hardness and I used the softest for .38 and .45. The harder ingots were saved for 9mm, .357, and 40cal. Then this week I read that factory jacketed 9mm, 40cal, and 45 jacketed bullets use 3% antinomy while .22lr has 1.2% antinomy. Has anyone tested jacketed factory bullets and found the average bhn to be uniquely the same than just melting everything together? I'm sorting a recently retrieved batch of range lead now.