There are only a few things which can glue an action into a stock:
1) Adhesion: deep freeze, then with the stock stopped against a floor, rubber mallet to the muzzle, rearward and side to side. Flip it around and hang the forend on the edge of a bench and whack the rear of the receiver to drive it forward. Doesn’t take much movement to break adhesion free.
2) Physical lock: there are only a few places bedding compound can find itself which can physically lock the action into the stock. Pin holes, mag cut, trigger hangers, etc. Some of these can be easily broken with the same mallet whacks as above. Some can’t. If you know the action shape and “what lies beneath,” then you should be able to identify what could be locked or not, and how strongly it might be locked it. Might have to cut the stock away, might be able to whack it, might be able to make a few discreet cuts or drill holes from the bottom metal inlet to cut the physical lock...