not the bolt handle.. the safety. I've seen welded last ditch ones with no knurling.
no evidence of sporterization either... wood has plenty of battllefield character marks. still has metal butt. every sporter I see they machine off the sights.. tap it for rails, add a rubber butt pad, cut all the forewood away and repalce one of the bbl bands and then sand the wood.. or drop it into some sort of MC stock
they had it marked as 7.5x55 i'm guessing it isn't
.. that's a swiss cartridge for the schmidt reub...
i'm betting it it still being 7.7x58.. easy enough to see what it will swallow though...