I have a 63-1 myself. And an original Bearcat. I only mention that because I put both those guns in the same category. Small and easy to carry around... and actually quite challenging to shoot well. Your technique of a consistent hold and a straight back trigger squeeze better be picture perfect... or it will shoot a foot to one side. You shoot something like a Ruger MKII target pistol and you start to believe you are really getting good. Then you try the same thing with a early model Bearcat or a S&W M63... and you realize you aren't quite as good as you thought.
Excellent training guns.
Excellent training guns.