http://www.ballisticproducts.com/bpi/articleindex/articles/mecadjust/mecadj.htm describes how to deal with buckled hulls and poor crimps on MEC reloaders. Maybe, it will translate to the Pacific reloader. MEC reloaders do not support the base of the hull at the crimp station, and the outside body of the crimp die can press down far enough to buckle the hull.