I have found that the following load is quite accurate in my fullsize Springfield "Loaded" 1911:
4.9grains of Bullseye behind a 200gr Rainier SWC or 200 gr Rainier flat point.
5.7 grains of Unique behind the 200gr Rainier Flat point or flat point.
The accuracy between the SWC and flat point is about the same for me in this gun.
My Springfield feeds both without a hitch.