Originally Posted by Karl.Luhr
I agree that nothing is getting wrecked unless it is a rimfire. The hammer on a rimfire stiking repeatively will damage the chamber area. I was always told that the firing pin still is banging forward when there isn't a primer for it to hit. I like to use snap caps if I have one for the caliber I am dry firing.
I'd have to agree. I'm not a metallurgist, but I do know a bit about it (knife maker for 20 years and work in a mill that casts, rolls and heat treats metal). The one reservation I would have would be if it was poor quality metal. Either a "Saturday Night Special", or a gun that was over 100 years old or so. A modern center fire weapon made from modern steel would not fatigue from dry firing. My dad still has his old police duty gun. It was a Smith and Wesson 38 special revolver. That gun has tens of thousands of rounds through it and he was taught to practice by dry firing. It's been dry fired thousands of times. It still works just as well now as when it was first issued to him 30 years ago.