I just got back from the GunClub, shooting my new Sig 226 .40S&W, the gun shoots well. but about round #35, it did not go bang ? I cleared the gun and looked at the cartige . it had a nice round Dent in it, so tryed again (click) . well this is factroy ammo Winchester .40S&W 180 grain full metal Jacket. I bought it from midway last fall ,stored in a dark cool place with 50% or less humidty . of all the factroy I have shot this is the first one that falied to go bang. has anyone have this happend??? I am going to send this round back to Winchester and ask them what went wrong. PS. I tryed to put pictures here but the site told me that the file was wrong someway??