Ed and Bill, Thanks so much for your feedback! I do have the original stock for the barrels. However, I do have an additional stock (evidently from a 12 gauge according to Ed). Yes the Damascus barrels where blued but not sure of the process they used to do it. Here is a picture that might give someone a clue:
You can see where the bluing stops and the original Damascus brown remains.
Also, here is the barrels with the original stock:
Please let me know if this makes sense to you.
Thanks again,
Scott