What alloy are you using Glen? I hear different strategies from folks on small cast bullets, and they all seem to make sense. I've talked with one guy who casts 22 HPs out of lino and water drops them. He wants the bullet to fragment, somewhat like a commercial frangible bullet. Then another claims air cooled WW hollow points for expansion at full velocities. Then we have the plain old flatpoint, let the bullet design do the killing. I honestly never tried sorting out the theories before, all seem viable.
I do plan to use heat-treated 223 solids this year for rifle practice on steel, I don't want to "waste" lino on this, but waterdropped range scrap should be fine for such practice, but I really do need to work on some sort of plan for hunting bullets as well.