Here's a picture of the form die that I form my 3.25" long - 45 basis brass by using used primers and water. In stead of fire forming 200 to 300 cases and wasting powder, primers, bullets and my shoulder I had this water run hydrolic die made up. First you prime your new cases with used primers to hold the water in your case, fill case with water then insert it into the form die which is mounted in a reloading press ( surround form die with a small cloth) Holding the long punch, slip the tip into the top of the die and use a wooden mallet to knock the punch down causing a hydolic action to blow the case out to the dimensions you require for your rifle's chamber. One hit with the mallet was all that was required for enough force to form. Then I hand deprimed the cases and air dried them. Thought I would share this style of case forming in case others wanted to try this method or adapt it for their special case forming needs.
HGS