I would like to comment. I am a traditional lead/ copper coated bullet user, But I have been doing some research about the non lead solid copper bullets like the barnes TSX bullet. It's too late this year tofor me to work up a load but this video will give you a good idea of how the solid bullet works on an animal. I have a friend that shoots the tsx and at 300 yard out of a 7stw, a deer will spew lungs on his way down. Check out this video http://www.barnesbullets.com/videos/308_180gr_TSX_6fps_logo.wmv