Just went down that rabbit hole with 147 jhp's and after a loooong time and many powders,My first serious 'project' now I'm getting into reloading is to develop a 147 or 150 gr 9mm recipe that will stay subsonic all the way out to the muzzle of a Ruger PCC so I can shoot suppressed.
I got it and what a nice pistol round it is considering I have many thousands here.
Very accurate round with less rise.