Fav loads for the .45ACP using 200 gr lead SWC.....
Been loading .45 ACP since the 1980's.
Tried a few different powders with varying success but always come back to two favorites with the 200 gr lead SWC.
#1 Pet Load: 5.2 gr Red Dot [gives about 850 fps from a 5" 1911 barrel]
#2 Pet Load: 4.9 gr Bullseye [gives about 825 fps from a 5" 1911 barrel]
My preference is to stick to the #1 load using Red Dot but will go to Bullseye if necessary.
A number #3 load is: 4.5 gr 700X [gives about 800 fps from 5" 1911 barrel].
I've also used: Unique, Green Dot, 800X with success, too. I have used Win 231 as well but find it extremely dirty powder so quit using it.
Two now obsolete powders also gave favourable loads but are no longer available: Win 273AA and Win 252AA.
Make sure you don't over bell the case mouth in that step. And you want to seat the bullet shoulder slightly out from the case mouth as described above for best feeding results.
I've run the 200 lead SWC through lots of USGI 1911A1 & even a few 1914 vintage Colt government models, without throated barrels, and all have digested them well.
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NAA.