I am thinking about purchasing a hydraulic forming die for my 6mm AI. I am looking for feed back from anyone that has had experience with them. I have 300 pieces of new brass and was wondering what you guys think. It seems to make sense to me, save the component cost and minimize barrel wear which on this caliber is already limited. I thought about the CW method but the noise would be an issue. Also who else make them besides Hornady and what is the best fluid to use water, isopropyl alcohol or machine oil.