Ray over at Armory Blog came across a post on reddit about an old Finnish Mosin Nagant someone found in the woods and restored.
Back when I was younger in my Boy Scout troop someone had found an old .22 bolt gun in the backwoods in Colorado where we held our summer camps. One of the scout leaders had the rifle restored and the gun was used in our troop for years and was a great gun to shoot sadly the rifle is no longer with the troop.