My local gun dealer has got a Jeffery Double in 400 Jeffery. It is a hammergun, but fits me very well, and t would be perfect as a medium bore rifle. I could however need some help with info on the rifle. The pictures are not very good quality, but you should get an impression. It is not in "mint" condition, but this kind of rifle I want to have a "used" look on.

So can anybody tell a little? Approx time of production, round action (like on this one) vs other actions, price range, etc..