For accuracy, absolutely.
The best shooters I have known and seen have that in common. But, most were also young (30s & 40s), had good eyesight, were physically fit. Many worked with weights for strength. One of the top shooters of all time, and still winning, takes hundreds of dry fires at a spot on his wall at home daily. I swear, some of these guys are so steady you could do chin-ups on their barrel while they are sighting and they wouldn't notice. Watch the guys at the Hawken match then look at their scores. Mind blowing.
