I sold my STW and not long after I’m noticing more reloading supplies available. When I sold it you couldn’t find anything anywhere it seems. I’d bet ammo should come available although limited. I’d look for custom loaders as having it
I found two boxes of junk ammo in stw I may still have it. Seems like they were Remingtons

“Socialism only works in two places: Heaven where they don't need it and hell where they already have it.” ― Ronald Reagan