No, not the headspace, the headspace is ok but I gauge the entire chamber. Once I put the gauge I can see the difference that is minimal from factor but I change the barrel anyway.
You do not need to replace everything in detailed preventive maintenance but I replace many of the parts above anyway. The best way to mitigate risk
is to take the potential risk away.
Again all those parts are very inexpensive compared to all the ammo and other expenses every year so it is a no brainer for me.
Cheers,
E.