I read an article by German Salazar on neck tension. In it he made the following statement about not sizing with a bushing die before neck turning, "You will notice in your sized cases that there is a slight bulge [at the neck/shoulder junction]. That's because the bushing has a small bevel to allow the neck to enter without shaving brass, so the lowest portion of the neck which comes to rest in that bevel doesn't get sized as much. The bulge will have no negative effect on accuracy or brass life. However, if you plan to neck turn, then the cases should be sized with a conventional non-bushing die prior to the turning operation. That's because the neck turner would cut the bulge off, thus dangerously weakening the necks at that point and perhaps leading to a neck separation upon firing." I haven't seen this anywhere else. Is this common knowledge?