I always have to wonder about the head spacing on these old imports, most are WWII era and older. Asked a dealer one time if the MN's he was selling had been safety head spaced...he looked at me like I had two heads and then mumbled something about thinking they must have been at "some time".
I had a Mauser 8mm german rifle that (TG) I had head spaced prior to shooting. Thing might have blown up had I not had the chamber reset after seeing the headspace guage disappear when the bolt closed over it!!
May have to invest in a guage just for me, cheep insurance to keep your face where you normally do...