I have shot them before, but never had one. Unless the extractor or ejector is missing, or a spring is broken, it just might need a good cleaning. If you can't take the gun apart, use one of the spray gun cleaners to loosen the crud and flush it out. I've had old guns before that were inoperable because the oil or grease had thickened. I had a Navy Arms baby rolling block where the trigger wouldn't even work. A good cleaning in place took care of that.