The immediate post above well explains one of the problems I experienced and I started this thread. I tried 8 magazines as explained in an earlier post. Many of my cartridges looked exactly like those in the above picture. Sometimes the cartridge would not look like those in the picture, but the cartridge would not completely enter the chamber and the gun goes click and not bang. It is not an extractor problem. My rifle has been sent back to the factory with a long letter of explanation and I will keep everyone posted as to the outcome. Obviously, my rifle's problem are shared by some of you. Thanks again for all the help.