So out of curiosity, I've never had a very late war bnz45, but from the look of them, they suggest working the bolt would feel like someone through a handful of pea gravel into a nice mauser's action. Is that about right?
I'm always fascinated that any GIs brought back the latewar guns. Earlier production guns of much finer make were lying around everywhere and were infintely more suitable for a nice trophy or the basis of a nice hunting rifle back home (stateside mostly as war trophy rifles were almost an obsession with WW1 and WW2 GIs, and the practise was sanctioned by the US Army at the time).
Only thing I can figure is some guys preserved these to show their friends back home just how bad things got as Germany neared the end.
Either way, I'm glad some are preserved like this - they are perhaps the most interesting K98ks to collect IMHO.