I know that a 1.5” group is good enough for a whitetail rifle. Even a 2.0” group will work on deer or elk in most cases. But I won’t have one very long if that’s the best it will do. I spend less than a month per year hunting, and the rest of the year shooting at paper or steel. I want my rifles to shoot less than MOA groups, and 1/2 MOA is preferred from the bench at 100 yds. When that “less than a month” rolls around, I have all the confidence in the world that my rifle is up to the task.