I've tried many of the loads listed on BULLSEYESHOOTERS and I'll add
two more that worked very well for me:

.45acp - 185g Nosler JHP; 5.2g VV N320. This load gave me tighter
groups and cleaner than same bullet with 5.0g BE. Used 14lb spring
in Kimber Classic.

.45acp - 200 SWC Laser Cast; 4.6 VV N320. This load gave me tighter
groups than same bullet with 4.0 or 4.6 grains of BE or 4.8 grains
of WW 231. Used 12lb spring in Kimber Classic.