For a long time Smith and Wesson has made lightweight revolvers out of materials such as aluminum and titanium, and most recently, scandium. They did it to the .357 magnum, a round that was once commonly used for elk, but is now barely considered enough for whitetail. They did it to the .44 Magnum, with the 329 PD. When the 500 Magnum goes down this road, what will they make it's five shot snub-nose version out of?