BSA,
My first one is totally glassed. The Varmint model is factory and the 30-06 I am working on is factory. The wear marks on the bluing indicate movement on the fore end of the barrel. I know this is a bedding issue but I do not believe it is a receiver bedding issue. That is why I asked if others have experienced this. Last night I bedded the fore end with slight pressure to simulate what the shim did. I will see if that solves the issue. I know a complete glass job will but I believe it may not be necessary. Winchesters are the only rifles that have been fussy like this for me.