Don, I have the CH4D dies for my 9.5x57MS, they are good and they also includes an expander which brings the neck up to parallel, however doing it in one pass is too much IMO. I would have another slightly smaller expander made to increase the neck in two steps, that is what I have done. I also had the expander coated in a titanium nitride coating, this one is called Zenit. It is a proprietary coating from the German company Guhring who are the worlds biggest manufacturers of carbide drills. Zenit has the lowest coefficient of friction in the range that I can get here in Australia. In the US Guhring has several other coatings with an even lower coefficient of friction. I coat all the expander buttons on the die sets with such and you can feel the difference and see it as well as the necks have no marks at all inside after sizing. Just make sure that you polish the ball to a very high finish before coating.

Matt.