I find the aspect of this topic concerning the extraction most interesting. I have a V19 Serail # Y912. I am not sure when it was manufactured but believe it was in the late 1920's. When I first used the gun some years ago I had no problems with extraction but then for some reason the extraction issues began. The gun wouldn't extract factory or handloads. I checked out the componentry for wear and function but couldn't find anything obvious. I used a chamber gauge to determine if the chambers were somehow damaged or tight. Results inconclusive. Then I made a casting of the chamber. Sure looked tight to me. Sent the gun to a gunsmith who told me he had never seen a set of chambers so tight. Right at the very minimum of the standard. I had him relieve the chambers to mid point of the standard. Regret I don't have the dimensions at my fingertips. I haven't shot the gun since. I hope to do so within the next couple of weeks. I believe that the reason I had no problems when I first acquired the gun is that it had not been shot much and all the components were right to spec. but with some shooting the extractor wore a little and hence would no longer extract the cases from the tight chambers. If this topic is still around and I have found the time to shoot the gun I will let you know if relieving the chambers was useful or not.