If you have an open end where the case is cut off this should work. Take a snug fitting stainless steel chamber brush that happens to fit into the remaining case shell. Soak die in Kroil for a couple hours. Then take short brush handle put stainless brush on the handle and shove it into the case. Put back out...the bristles of the brush will grab the inner case walls and pull it free. If not send die to manufacturer and let them do it.