500Boswell,
I was only just looking myself into how to reload for it as I like to be able to reload for everything I shoot.

Just got an old H&R model 1915 only the other day, & wish I could date the darn thing!

It seems that the old manual LEE handloader kits are now no longer available & to reload these cases are not as 'factory' as I like.
The link below should help you out - some pretty rough stuff out there but it will all work; some like Daryl's though will be much more professional, especially using the .444 brass.
http://www.fourten.org.uk/mwloading.html

If you keep your cases
from latest ADI manual
Winchester AA cases 2 1/2"
Winchester AA41 wads
Winchester 209 Magnum
AR2205 14gn
No6 1/2 Oz
Approx 1200fps

Cheers
93x64mm