My hydro-form is a die from Hornady with a small diameter plunger protruding out the top. I smack it three or four times with a two pound dead blow hammer and viola it is formed so close to the chamber I can hardly tell if one is fireformed or hydro-formed.
I have watched the video, and definitely can understand the idea and like it. But it does not match in any way what I thought this was and what I was told. Think my best bet is to pull the parts off the press and turn it back into a standard reloading press