I've been lurking around this site for a while. Finally joined. I've got a question I hope one of you knowledgeable guys will have an answer to. My shooting buddy and I are shooting a lot of cast boolits lately and have gotten into harnesses. We were wondering what the hardness number is for a typical jacketed bullet. We are getting around 20 for our hard cast and were wondering how close we were to the hardness of a jacketed bullet. Our hardness gauge is his and he worries that a jacketed bullet will somehow damage the gauge. So here I am asking what is the hardness number for the jacket on a jacketed bullet?
TIA