We aren't talking the razor's edge of competitiveness, with 9 of 10 shots in the center of the Nike logo on some perp's hoodie. The idea of a base level of shooting is a good one, tho, as we are talking COM hits, and a 7 ring hit is still a hit, regardless. If you can do that by walking up to the line and hitting 7's after a six month layoff, fine. Your OTHER skills would be better off getting practice, like being aware, or changing some bad habits. Even your door locks.
I hadn't shot a gun in years - was scheduled to work the night before a CCW class, got off at 2:30 AM, stayed up to get to the class at 8AM, attended the sessions and we shot at 2:30 PM. Most of my qual hits were inside the 7 ring and a lot inside the 8. Two years off shooting with a gun I never practiced with - G19C - and behold, they were all kill shots.
So much for a stationary target at 21 feet, tho. Can any of us do that with one moving at a walking pace approaching us, or while moving to cover? Accuracy in shooting is nice, EFFECTIVE accuracy is what is trained in the military on pop ups, engagement courses, etc. We should be practicing inside a shoot house, not a range, one laid out with the floor plan of our home. If you can tackle that and get ten 7 rings, you can adequately defend it.
BTW, one hit by the perp and you lose. Paintball, anybody? Point being, there are no precision paintball contests - just hits, same as combat.