I've seen in print and on the internet several times where a model 29 or 629 will eventually shoot itself loose(uaually in reference to a Ruger being stronger). Has anyone here, heard of, or seen one that this has happened to? If so, did the accuracy fall off and how much? Was the pistol unsafe to shoot, in the observers opinion? What does the factory say about such guns(rebuildable or not)? If you know of one, could you please estimate the number of rounds that have been put through it?