Thread: Rem 700 600

Shim it with the metal-filled tappable epxoy. JB-weld or similar. It works, it's not a new problem you've found. Just chuck a fair bit under the rear of the base, tighten the front down and let the rear set up (making sure the screws are in at the rear and have release agent on them so you don't glue them in place). Once cured, torque both ends as normal. If I could be bothered I'd take a picture of a few high-end one piece bases that needed this treatment.