What is claimed is: 1. In a method of making a barium titanate ferroelectric article comparing dry pressing commercially available barium titanate, firing the dry pressed form to maturity, and cooling; wherein the improvement comprises firing the dry pressed form at about 1200 to 1400 degrees C. while applying a vacuum in the range of partial air pressures preceding the partial pressure where reduction of the barium titanate would occur and in the range of between about 1 to 1000 microns and cooling to ambient temperature to upgrade the dielectric properties of the barium titanate. 2. The method according to claim 1 wherein said vacuum is maintained while cooling to ambient temperature.