Well that is what i would like to find out. How well a 215gr CF would work in copper and how much it would weigh in copper. Lehigh also makes a Max Expansion 308 in copper.

Im not locked into the fracturing requirement. Expansion is fine with me also. My FPS window is huge. I can shoot them pretty much as fast as i want or as slow as a 10mm carbine. Ive shot a 225gr Barnes so fast it kinda fractures and the energy dump was impressive. The recovered bullet still weighed around 200gr.