Tell me if this makes sense to you guys. I'm just sitting here at work thinking and reading
Water quenching boolits as everyone knows increases hardness provided you have enough antimony in your alloy right. I think i saw some articles stating that in order to completely harden lead alloy boolits would have to be baked to 400 for an hour and then be water dropped. BHN goes up as they age after. How quickly it depends on the amount of antimony and arsenic but lets assume both are present enough that this alloy hardens. Doesnt really matter what the BHN is at this point.
So If I PC my boolits at 400 for 15mins then water drop wouldnt be long enough right? Or is it enough time to heat up surface of the boolit but not the core in which case outside would gain couple BHN from water drop but middle would still remain soft. Sort of how knifes are heat treated. Hard on the outside so it has a sharp edge but soft in the middle so it doesnt break from being too brittle?
I would think that having boolit thats hard on the outside so it doesnt skid and soft on the inside in order to protrude properly would be very desirable. These would function same as FMJ but would be pure lead alloy. I'm just not sure if there is enough mass to really get this kind of effect. I'm sure there are other factors involves as well but I'm curious to see what you guys think.