I'd say clamp the barrel securely in a well padded vice, swing out or remove the cylinder and drive the slug back to the breach end with a close fitting brass rod or wood dowel and heavy hammer. Use the weight of the hammer head itself to do the work. Carefully.
As an added thought, spray the barrel down a bit with a good lube to aid in it's removal.
Lead or Jacketed bullet?
Regards, Ray
As an added thought, spray the barrel down a bit with a good lube to aid in it's removal.
Lead or Jacketed bullet?
Regards, Ray