"air bubbles" in the cast bullet alloy will throw the weights around bullet to bullet. I suspect.
what i haven't done yet but keep threatening to do is make a duplex lead bullet. Soft nose followed by a hard shank.
not like it hasn't been done before.
I have at least a half dozen of these combinations i need to run into water jugs/chrony. But then it's only in the 90's now, as usual i probably will wait till it's 115 in the shade on the desert.


THE BIRTH PLACE OF GERONIMO