Originally Posted by fredj338

How does a larger bullet cause leading issues? Usually leading will be caused by a bullet too small, not too big. In plated, you might get by with jacketed dia but IME, accuracy is better treating them like lead & going 0.001" larger.
Not sure what kind of special dies we are talking about here but I have been using circa 1975 RCBS 9mm dies for 40yrs to load on my 550.