hi, i find 4.4 grains of GM3, with a lead 200 grain semi wad cutter is a great combination, i also find by using extra lube, a tumble of liquid alox thinned 50/50 with white spirit adds up to an extremly good target load in my 80 series colt government stainless and feeds flawlessly.the reason i use the extra lube is, i was getting a little leading at the front of the chamber ,this little tumble of alox completely stopped the lead from forming .