I have dry fired mine plenty of times and never have any problems with it. I never do it repeatedly. I shoot my .22's weekly so most the time they just sit cocked and ready for a mag. I very rarely decock them anymore I have a pretty big indentation at 12 Oclock and don't feel like replacing the firing pin assembly anytime soon. Never new if it was bad to leave them cocked but so far no problems with leaving them that way. :t