GOOD CATCH!!
I have built a few 98 Mauser's... The first was a GEW 98 the last ones all on the Argentine Mauser 98... A couple years after building my Whelen, I ran across a custom 98 made on a Argentine 98 action, chambered in 280 REM. Shilen barrel, I like, Same shroud I have used but an old Bishop Walnut stock. (I have used synthetics for all but one laminated) This was a old sporter, nice patina but very similar to mine. It had a then new VXIII 6x18 scope. I worked a deal where the store kept the scope and bought the 280 for a song!! It too was a sub 1" shooter. Upon dis-assembly I found a Timney DLX trigger, nicely bedded action and barrel fitting a Douglas barrel. I was thrilled and still have that wonderful shooting rifle!
Good luck with yours!
CW