Can you back the expander and pin up enough to drill and tap the case head? If so, do that and then put it in the freezer overnight and try to pull it out with a threaded bolt.Who makes a stuck case remover that will fit a 470 ne. RCBS to small to fit the tim.
You may be able to use about a 5/8" 12 point socket with your RCBS. May need a longer bolt.Who makes a stuck case remover that will fit a 470 ne. RCBS to small to fit the tim.