I think I will just have to re-regulate it! There is no mechanical flaw in the crown that I can detect and the trigger pulls are about the same. The gun crosses when you use the right set trigger or not. It's interesting, as the gun comes with a factory target that shows a 1 inch group at 100 mtrs. Probably all shot with the right barrel!!!The gun is a Heym 88B sxs double fitted with claw mounts and a nice 1.1-4X variable german scope. While I bought it used, I know who owned it and I don't think he ever put a box of shells thru it. I also know he probably never knew it crossed as he's not much of a shot and probably was satisfied with shooting it at 50 yrds. The gun is totally the way it came from the factory as far as I know. It's basically mint and based on the blueing condition has never been touched. I ought to know as I've reblued enough guns in my time.Butch Searcy described the re regulation procedure to me and also stated that I might get away without having to re-blue. That would be very nice as the gun really is very nice.-Rob .