I'm looking for the smallest and lightest revolver with a 3" or longer barrel, double action in .357 magnum. I'm a large revolver person and have very little knowledge about smaller revolvers and what's readily available out there. This is for my wife and the specifications are hers. Don't give advice on semi-auto's , she already has one. She wants a revolver. If you can provide info on a easily obtainable revolver that fits her criteria , we would appreciate it.