I'm probably going to get flamed for this but I own 30+ surplus firearms in various condition and I think I've only ever had the headspace checked in one. If the fired cases look normal I don't worry about it. The only one I had the headspace checked on had bulged cases after firing so I took it to my gunsmith to get it looked at and it turned out to be normal for that rifle because of the chamber tolerances.
If your rifle is one of the recently imported refurbished guns I can almost guarantee its fine since it was completely arsenal overhauled before being crated up and then imported.
Just my .02