Aguila Blanca
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And if you want to shoot really powder puff loads through a .45 six gun, there's also a non-historical cartridge called .45 Cowboy Special. It's a rimmed case that's the same length as .45 ACP (shorter than .45 Schofield), and is loaded using .45 ACP dies. It allows a very light powder charge with less concern about the powder shifting around in the case. Unfortunately, it's not in stock at Starline at the moment:Schofield brass will work in .45 Colt chambers. But you can't crimp it with .45 Colt dies. You will need a separate die to crimp it, one made or altered just for that purpose.
The standard loading dies in .45 Colt are not made "dual purpose" like the .38/357 or the .44Spl/.44 Magnum.
.45 Schofield came back from the dead a while ago, for the cowboy action shooting market. Its not as widely available as .45 Colt, and wasn't in the same demand, so right now, you might find some but its a dice roll.
https://www.starlinebrass.com/45-cowboy-special/