Diamond Paul is correct in the "counterproductive" aspect.
The concentration required to stand at twenty yards, and hammer a flat, white, extremely boring, bullseye sixty times is more than I can handle.
I tried different methods of "aiming" to improve my scores and set in motion a host of problems with my shooting.
Now, when shooting on my 300 league, I try to relax, and do my best. The six inch "kill zone" is what is important to me.
It`s all about maintaining, and improving my shooting skills for hunting. Changing my shooting style to improve my scores on paper certainly was "counterproductive" for me.