Unfortunately, I do not have permissions to post Lyman's reloading data here. I provide a link if you would like to check it out.
For 185 and 200 grain loads, here are the powders that Lyman uses:
Clays, Titegroup, 231, Universal, N340, WSF, Power Pistol, Longshot, True Blue, Blue Dot
For 230 grain loads, here are the powders that Lyman uses:
Universal, N340, WSF, Power Pistol, Longshot, True Blue, Blue Dot
For 185 grain loads, Lyman recommends Power Pistol as potentially the most accurate load.
For 200 and 230 grain loads, Lyman recommends Ramshot True Blue as potentially the most accurate load.
Here's a good source for .45 GAP reloading data available to the public:
http://www.lymanproducts.com/lymanproducts/books.htm
safety, safety, safety
.45GAP (.45 GAP) Caliber Page; Document Version 03/12/06