There have been several threads concerning Cu enhanced alloy at the CB forum. Several members from Michigan had done the most experimenting in this area. Cu is a grain modifier in mush the same way as As is. Mike (357Maximun) reported shooting cast bullets with Cu enhanced alloy in his .35 Whelen at the same velocity and accuracy as jacketed bullets. He also reported that damage to deer shot with bullets cast from those alloys was so severe that he dropped the velocity by about 200 fps mv before continuing the practice. badgeredd reported that some of their loads were generating an estimated 50k to 60k psi. Reportedly, bullets from their alloy were holding up to the pressure. edd gave me an alloy recipe but I can't seem to locate it right now.
I'm interested in this topic for future experimentation, however, nothing I'm currently contemplating in the way of shooting cast bullets will get me anywhere near 50,000 plus psi so this is a back burner project as far as I am concerned.
I'm interested in this topic for future experimentation, however, nothing I'm currently contemplating in the way of shooting cast bullets will get me anywhere near 50,000 plus psi so this is a back burner project as far as I am concerned.