When I bought my m700 stainless SPS 300 WSM about 10 years ago, the factory was putting a pretty rough bead blast finish on the receivers. I had recoil shear the base screws on the rear mount, So I turned to the collective wisdom of the campfire and was told to use epoxy bedding between the mount and receiver, so I did.
I put release agent on the receiver and threads so when I screwed them together it only stuck to the bases. The problem was solved and has never repeated.
Also, sometimes when you remove scope bases you will notice where oily goop has worked its way under the bases. This means your rig is asking you to bed the bases for uniform fit and bearing.
