"I have a question about the action.
The gun has a bad timing. The chamber doesn't align correctly with the barrel.
Any help ?" I can only say that the 'teeth' on the cylinder are worn, the hand (pawl) that rotates the cylinder is worn or the full cock notch on the hammer has been messed with (filed/sharpened). Will the cylinder lock (chambers align) when the hammer is pulled a little beyond full cock?

__________________
Mike Maher #283