as previously posted by others, a responsible
hunter would pattern their shotgun (or any firearm)with the
ammo they intended to use, and wouldn't use anything
with a less than optimal pattern. folks that would
just fling lead would likely do so no matter what
firearm they were holding at the time.
myself, i've killed several with regular old cheap
buckshot, mostly on days that were full of east Texas
fog and at close range. the first one i killed on my
own place was killed during a fog so thick that a rifle
with the most expensive of scopes would have been useless.