I just talked to the dealer who told me that he ordered the barrel for the owner about a year and a half ago. It is quite possible that it is a post 2007 one. I am going to pick it up for $500 shipped. I think that all things considered, it is a pretty good deal. I have over 100 38.55 rounds plus that much brass at home as well.
Who knows maybe I will have the 45.70 barrel shortened by 4-6". I would like to tromp around with it for a while first.