I did some tests with the BRNO. So far:
72,5 grains of IMR 4451 with a 300 grains Sierra BTSP shoots in 1,6"
72,5 grains of IMR 4451 with a 300 grains Hornady Round Nose gave me a .9" group
72,5 grains of IMR 4350 with a 300 grains Hornady BTSP gave me a 1,3" group
Rifle is finicky. She...