I have been shooting Norwegian Krags for a couple of years now with standard factory loads with no problem. I would under no circumstances fire any thing that is advertised as "hot or plus" loads. Look back in the past posts, Nord our Norwegian connection posted some of his loads a while back.
Parts for Norwegian Krags are scarce as hens teeth both here and on the other side of the pond. If you are patient some do show up, but to get all parts is a long shot. Also parts on Norwegians as well as Danes were serial numbered to the rifle, so all you would have is an expensive missmatched shooter. There is a custom stock maker in PA, Mike Kokolus, who makes excellent quality repro stocks fro M'94 rifles and M'1912 carbines/short rifles. I believe that he gets $225.00 or $250.00 for them, but they are 99.9% ready to go!
Nord checks in from time to time when he can and should see this sooner or later. He has quite a bit of info on many Norwegian Krags and has been a great help to me in my recent obsession with Norwegian Krags.
Ned
PS If you want information from a serial number you need to post the entire number! This is a very sore subject among collectors, we can't help you with out all the information!!!