If your that close to CZ, I'ld take it back to them. I've shot silouette for years, and what happens, is a shooter will lighten the spring to try and get a lighter trigger pull. Except that on revolvers, making them to light can get light hammer strike's. Or the spacer for the cylinder could have a bit to much play in it, and instead of the pin hitting the rim hard enough to set it off, the cylinder could be pushing forward just enough to not set off the primer. Either way, I'ld probably take it back and let one of their 'smith's look at it. We keep trying peace, it usually doesn't work!!Remember (12/7/41)(9/11/01) gypsyman