What are the concerns with reaming the throat of the barrel? Most other factory parts are changed, swapped, modified, milled, etc on these guns; what is the opposition to modifying the barrel to allow for more reloading options. I have just ordered my first CZ and have no idea if the ammo that I have been using for my XDM will work in it or not. However, it seems to me that the industry would have certain specifications for barrel/chamber size, and it strikes me odd that ammo that works in other 9mms will not work in a CZ. I further assume that reaming the throat just brings the chamber to the specs it should have been to start with?