Someone always wants to beat the system or in this case, the engineers. Figure out how to make something work in a way it was not designed to work to show what a smart idea they have! A turn line shows the revolver is operating properly. It is a by product of proper operation. Slight stoning of the offending side of the cylinder stop is the only approved way of addressing the issue. Anything other than that is tampering with the proper operation of the revolver which could cause it to fail when it is needed the most. If the stop does not rub the cylinder or have the spring tension to engage the cylinder notch then it will not lock the cylinder when it reaches the notch and a light lock into the notch could cause it to jump out under recoil. Maybe individuals that are bothered by the turn line should trade for an auto?

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S&W factory revolver armorer