I've been using Remington 221 Fireball brass for years to make my 20cal Vartarg cases. And with Rem 221 brass being as rare as hens teeth, I thought about picking up some of the new Nosler 221 to form into 20VT. Before I shell out $86, I would like to know if the neck walls are the same thickness as the Rem brass? The Remington before forming is between .011-.012??