Found this on the Firing Line Forum:
"Ken and Dundee, thanks for the input. I pulled a 1985 Winchester load book out of my book case after reading your responses and it did list 452AA loads for 45ACP. The two loads listed are for a 185 gr. F.M.C. (full metal case) bullet. Also listed using this powder are a few loads for the 38 special. Although, I had looked in this manual before, I must have looked only at the 44mag and 45LC load listings. The fact that light loads of 4.0gr and 4.5gr of 452AA are listed gives me some encouragement that I can ultimately develop light target loads for the 44mag and the 45LC. I am also encouraged that E.D. Harris stated in an article that 452AA and Trap 100 are the same powder. Old Hodgdon load books have a number of load listings for that powder in both the 44mag and the 45LC."
You may want to try looking at some old Sierra Manuals.
The 452AA was very susceptible to temperature changes, probably one of the reasons it was discontinued. You may also contact : HODGDON Mike Daley is great help!