Both cases and swaging https://books.google.com/books?id=dsc7AQAAMAAJ&pg=PA518&dq=bullet+greasing&hl=en&sa=X&ved=0ahUKEwiaq9aR-I_YAhVF5GMKHfrXCjAQ6AEIRTAG#v=onepage&q=bullet%20greasing&f=true