this appears more like a misc die that he through in (ebay used crap)
I went out and cut some 30-06 brass to 1.850 expanded straight (as best I could with some misc die parts)1. sized it in my 444 marlin die with the original expander removed.
2. rexpanded the neck/bullet area with the 444 marlin dies. 3 seated the bullet with a 44 magnum die it didnot give much tension on the bullet so I 3. ran it through the 444 marlin seater and it seems to put a good squease on the bullet.
I ended up with 3 rounds that If I had primed and powderd would not be afraid to try to fire.
The only reason I needed the 44 mag die was that the 444 marlin seater/ the part that pushes the bullet down would not screw down far enough to fully seat the bullet. I really think this can all be done with a slightly modifed die set. Or perhaps a differant brand of 444 marlin dies that has a longer seating range. I can easly modify my seater to work and still be functional to do 444 marlin as well. A expander to straighten the brass out is a must if you want a nice taperd round. I think once I come up with chamber you could skip the expanding and just fire form the case buy shooting it.
I then went out and made one with primer and powder just to say I have the first functional 444??? biggun special or a 11x46 Gunco special or a 430x1.85" or the 444 rimless short mag or the 444 SURT well any way I got the round now I need the gun.