Sorry, I've never reloaded .45LC. But for heavy .44Mag loads (180gr JHP or 300gr Sierra JSP), I used to be very fond of W/W 296 or Hodgdon H110 (they're nearly interchangeable) loads. The 180gr loads were amusing to shoot at indoor ranges: You got a HUGH fireball! Be aware that reduced loads with these powders can be dangerous. Sorry I don't have any loading data handy.
Mark
Thanks anyway.
I’m sure it’ll be fun investigating and experimenting with loads for the slightly lighter slugs.
I hope you have a good day!