I have both. My K frame is an old pinned & recessed model 19 blue 4". My N frame is an old pinned & recessed model 27-2 blue with the 8 & 3/8 inch barrel. It is the most accurate revolver I have ever fired. It makes my old long barreled Colt Python look bad. In my humble opinion the Smith & Wesson model 27 is the finest .357 mag. revolver ever made ! I am talking about the 27-2 models and older.