Mark, Good to see you back. I've never seen the press model you speak of. A lot would depend on the threading for the dies, and if the ram could handle Corbin or Walnut Hill dies. If it can only handle reloading dies and shell holders it would be limited to the type of swaging dies available today. Perhaps Richard Corbin at RCE could help you find out a lot more about your friend's RW1. He has been building those big hydraulic presses for 3 or 4 decades. He may want to know the size of the cylinder and it's stroke length so have that info ready as well as the TPI of the head and ram.