Yeah I want an accurate gun too! Most " hunting" rifles won' t do any better than 2" groups. So I am with those that say a 4" group at whatever range you will be shooting at will be good enough. In hunting there is no such thing as a " group!"
Deer have on average about an 8" kill zone, and dead is dead! So a shot 4 inches off the mark, gets you the same result as if you hit the actual hair you were aiming at! My hunting guns will do 1 1/4 groups, and truth be known, that is probably better than the average hunting gun. Practice all that you can, but remember groups really don' t mean squat in the field!