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Sled, I really like S&W revolvers and have owned models 10, 27, 29, 57 & 60. Every once in a while I have run into a Smith that needed work. As Whirly says they can be beat when subjected to lots of hot loads. Check the timing of the cylinder to make certain it functions correctly. Place your free hand thumb on the cylinder and apply a little friction as you pull the trigger in double action, dry fire the gun. Sometimes the timing hand is damaged and it will skip. Check the crane retaining pin hole in the frame. It should be perfectly round. If the hole is elongated vertically the gun has seen a lot of heavy use. Check the fore and aft of the cylinder when closed. Make sure the cylinder doesn’t rub the back of the barrel. There should be a minimal amount of end shake. There is a + – gap dimension but I would have to look it up. The barrel gap should be perfectly even top to bottom. Look at the side plate screw for damage. A buggered screw means the wrong guy was inside the gun.