What on earth kind of birds do you hunt??
Geese would be the answer, and as I stated, no longer legal. But VERY effective when it was.
I shot a duck with one of those was like 1975 or so, was wings and a beak left he was 50 or 60 yards away too
What you are describing here would be absolutely impossible.
At that range, #4 buckshot would not have the necessary pattern density to do that kind of damage.
i also only hunt endangered california condors so that may be why