I shoot H4831 at 68.5 grains with a 140 grain nosler ballistic tip. I am very comfortable shooting deer at 300 yards with good conditions. In practice, I shoot at 430 yards and shoot a 5 inch group (I don' t guess that' s great but I' m not a professional and shoot about 300 rounds a year.) I am sighted 1-1/2 inches high at a hundred (1/2" groups), right on at 300 with 2 inch groups. I' m dropping about 15 inches at 430 yards. I shoot a mkII ruger with a pilar bedded stock and timney trigger with a nikon 3x9x50. I might add that if go to 69 grains, I start having stiff bolt opening symptoms so work your way up no matter whose load you start with. I started at 62 grains and worked up.