Make sure the rifle's action is tight on the breech faces.

Also make sure that the head of the stock makes a tight fit with the action metal and that it is not soaked in oil and that there are no cracks in the head or wrist of the stock.

This is always good to know about any rifle, but these conditions will keep an otherwise well-regulated rifle from shooting properly.

Try to bend the wood up there by the action and look closely for movement, cracks, or signs of oil when you're pushing or pulling on it.
Anything but solid and tight fit needs to be repaired.

Cheers
Tinker