I think 39.8 grains of H -4350 seated at 2.110 base to ogive will do. This four shot group measures .422 and was the best group out of 6 different loads . Three varget loads starting at 36 grains to 36.6 grains and three loads of H 4350 starting at 39.5 grains to 40.1 . I may try playing with the seating depth to see if it helps shrink that down a bit.