It's a trade-off. Average shooters with short sight radii don't as easily notice slight errors in aiming, so they're not as likely to "hold tight" and increase the muzzle waver that comes from the excessive concentration tension that long sight radii inspire in them. Average and novice shooters generally do better with short sight radii. Expert shooters, more disciplined and better coordinated, generally do better with long sight radii. But few shooters want to admit that they aren't clones of Daniel Boone or Billy Dixon in terms of their field shooting.
