Interesting read. I haven't really noticed any problem though at the last BulletFest when I ran 1200 rounds of Romanian (my last) and then ran the Yugo for the rest of the day. Never had a problem, no reason to eyeball the brass any harder than normal. (Usually check the first handful of empties to see if there's any headspacing problems).if you fire brass AFTER you fire steel when the brass expands it will "glue" itself to the chamber because of all the fouling.