Re: Arbitrary POI change. Can you help?
Check the area of the action for any high point that would cause the action to be torqued when tightened.
Another way to check this is to take the action out and then put it back in and finger tighten both screws Then tighten them both up some and finally tighten one all the way down and see if that made the other get tight. Next back out the one that you tightened down a turn or so and tighten up the other and see if the loose one is now tight.
I might not have done a good job of explaining things but basically you are trying to determine if the action is "rocking" back and forth between the two action screws because of a spot in the bedding.
The Smokin Fur Rifle Club