Mod if in the wrong place please move. I cast up some Lee 310 gr. bullets for my .44 mag using 50/50 ww/pb with copper added. I left some as cast and heated others to 425F, about, and water quenched. After 3 weeks aging, about 6 weeks on the air cooled I put a steel BB between the nose of an air cooled and the nose of a heat treated and mashed them together some. As near as I can measure the air cooled dimple is 0.083" and the quenched is 0.062. Now, since the same force was applied to both the PSI in each would relate as the square of dia or radius, conversion factors cancel out. If volume, the the cube of dia. So based on area the hardened bullet is about 1.8 times the BHN of the non hardened or 2.7 times based on volume. Which one? I'll look up the BHN of the copper alloy once I know what I'm dealing with. In my ME courses we never dealt with hardness directly. Thanks guys.