All the pictures I posted are 160 and 175 factory loaded nosler ammo.Personally I think you are making a mountain out of a molehill. Factory ammo is never loaded that will cause an over-pressure. From what I can see, this is not an issue that needs to be discussed. It is what it is with this rifle and if there are not bolt lift issues most likely can be ignored. If there are bolt lift issues with factory ammo you have a chamber issue.