I don't personally load it, but I have a good friend who does. It's about the most powerful deer-legal cartridge in Indiana, so it's especially popular in my area.
The SOCOM is still a very specialized round, and I don't recall having yet seen it in a printed loading manual. Your best bet will probably be hitting the load data section of the .458 SOCOM forums
It's a cartridge I'm interested in even though I don't hunt deer. Hopefully it catches on more broadly.
And I don't think I've said hello yet. Welcome to TFF!