I have a Daniel Fraser takedown m98-type in .303 British. I believe it to be one of the Rigby contracted short-intermediate rimmed cartridge actions as the measurements check out. 23000 Rigby series action with a 3000 series Fraser build. It's a neat rifle built around 1915 ? by my reckoning. It seems there are four grades of which this is likely a number 2 based on number 2 being graved boldly in various locations. That said, it is not as the Jon Speed book states; the .200 inch loa difference between this short-intermediate and the intermediate is in the rails not the front ring. I can't find much information in these actions, so could be wrong, but would like to compare notes with any other owners or resources out there.