Originally Posted By: Jeff460
Have it reamed out to 444 Marlin and use 44 magnum, 44 Special and 444 Marlin cases loaded to 44 magnum pressure levels.

That doesn't work. The .444 is a good bit larger at the base. Any .44Spl or Mag case will likely split if fired in a .444 chamber. Reaming it to .445 would work.