'Damage' is relative. You may or may not blow off the top of the cylinder and topstrap (I have seen it done), but it can be gradual and cumulative. Short of catastrophic damage there will be increased wear on parts, usually manifesting itself in the gun going out of time. Forcing cone wear will be accelerated and the gun will commence to spit . There is no free lunch. Even continual use of hot factory .357s takes a toll on the gun versus more moderate loads.
Personally I am not that fond of recoil and need all my body parts.
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