[big al hunter]

You took your gun apart and reassembled it. Yes that will affect the poi. Especially if the torque on the action screws is different or if the stock and action mated in a new location ever so slightly. Some rifles will shoot to different poi for a few shots and come back to the original poi as the action seats into its old spot. Bedding the action will help reduce this, or you can just adjust poi each time.