Hi Morgan,Ed: I would agree with Dusty, I have never had either of the dies you are asking about but fire a couple cases 3 times in your chamber without sizing them and send to Whidden. That is the easy button if you plan on using the same chamber going forward.
what caliber are you looking for?
For a straight dasher, I think I would just send your fired brass to Harrels and have them match it with one of their off the shelf dies. They have 1,2,3,4 that size differently at different locations from what I hear. Could be even faster and easier.