I've never seen a chinese mauser with a shootable bore.
A buddy and I have been sorting, cleaning, and selling off a collection of a late friend. He had a couple pallets of chinese mausers. I'd guess maybe 2-300, maybe more. FWIW, some look nice on the outside, look like decent respectable mausers, then you see the bore. No bore, rifling half way, rifling 3/4 of the way, all of them. Then you get the ones the chinese have made stocks for....Oh boy you really should see some of those
I took one certain German K98k that had been used by the chinese, 75% of it matches too, bore is rough, but barely still there. I headspaced it and took to the range just for shits and giggles, it shoots a bit low at 50yds, but the bullet goes through the target sideways
Yeah, if you want a chinese mauser, don't ever expect to shoot it.