I had a Uberti Stallion that I dry fired and it certainly left dents in the side of the cylinder chambers. I had to file them just enough to repair them. I now have a S&W 18-0 that has recessed chambers. It appears that the firing pin does not touch the cylinder when fired. BUT! I don't dry fire this gun unless I have used cases or snap caps in it. Just in case. The gun is to valuable to take a chance. Why not take an extra moment with yours and assure that it will not be damaged. Good shooting.

__________________
Endeavor to persevere. <><