Kar98k is a beautiful rifle, almost too pretty to be an Army rifle at all.
They have a reputation for kicking like mules, but a lot of this is from the heavy military loadings. Remember, the 196-grain JsS round originally was the anti-Tank loading for this cartridge. They tend to be quite docile and very accurate with the 170 bullet and kick less.
If you want a really sweet-shooting 98k, try using the World War One loading, which actually duplicates the US .30 M1906, just with a slightly-heavier bullet: 154 instead of 150. You can come pretty close to this with (my favourite) the Hornady 150 seated out so the cannelure shows (and to crowd the leade just a bit) and an appropriate charge of 4985 or 4064 powder. Shoot really nice and don't kick: just normal recoil, none of the back-tooth-jarring slam that you get with the anti-Tank load.
Nothing wrong with the Soviet-capture rifles and you can find some REALLY rare factory codes in them at very low prices. Friend bought a couple in Winnipeg and he has a Sauer and a Gustloff! So the numbers are scrambled a bit: just means that they show part of their history. I don't think the Wehrmacht and Waffen-SS armourers really cared a lot about matching-up serial numbers and manufacturers' codes: they were too busy fighting a war.
Norwegians are utterly superb and there weren't very many done up like this, into the .30-'06. Some were actually used in the Olympics when "Ski-shooting" was a demo sport. It is now called "Biathlon" and is shot with very nonmilitary .22s, but was demonstrated by three of the four Scandinavian countries: Finland with MNs, Sweden with modded '96s, Norway with the fabled .30-'06 Mausers. Some Norski Mausers can regularly shoot third-of-a-minute forever: I have seen this.
But they are nice rifles.....