With all dies, it is very important to apply case lube to the case prior to the resizing process, particularly if full length sizing. Correctly applied lube will help prevent stuck cases, but be careful because too much lube can cause case distortions during the high pressures involved in the sizing process. White Motor Mica ‘graphite’ is used by some reloaders for lubing the inside of the case neck, but oil is almost always used on the outside of the case.