The best groups out of my Knight, have been 90 gr. RS Select, CCI ML primers, Hornady 200 gr. SST. The 195 Powerbelts shot good with 110 gr. RS Select. I'd start with around 75gr. and work upward not to exceed 120 gr. I've also had good grouping using JSG (FFF) up to 120 gr. Take a look at my thread( .45 Hornady 200 gr. SST) I'll be using a different bullet next year.
