LouM, I wouldn't be so sure, but it's a start.
Rainey, the 480 is an assembly number that is stamped on most all of the parts.
Sure would be great to have a book of marks, I've seen one for later German work when they were trying to disguise who was making what. This probable pre-WWI era should be less codified.
Mark, I've got three of these style barrels, current manufacture by Ralph Martini and they are very expensive, but Ralf will make what ever suits the project for scope mounts, sight placement etc.
Hope to have the rifle back together next week for some photos.
