Nice score dvdgeorge. I've already posted these links on another 444 thread today, but here they are again. Marshall Stanton has a three part tech note series at Beartooth Bullets and he does extensive load work for them with a broad range of powders and bullet weights. Of course, these loads are with hard cast bullets, but still great info and background on the 444.

Links to 444 tech notes (Part III covers heavy loads):

444 Marlin - Part I

444 Marlin - Part II

444 Marlin - Part III