If it were separated towards the front of the action I worry about a split stock. I'd pull the stock and check for cracks. If the stock is solid a little glass bedding should snug it up well. One other thing to consider if it is a new purchase is where the gun has been for the last few years. I bought a gun much like you describe which had been just north of Lost Vegas for about a decade. After six months in a much more humid home the stock swelled up to almost eliminate all the slight gaps. I figure the gun had been in an extreme low humidity for so long the entire blank was bone dry and picked up moisture like a sponge which caused it to return to normal.
