Stick a full-man target out at 100, and you will fill it full of holes as quick or quicker than a man with an AR.
A .33 hole is nothing to sneeze at. 2-4 hits per shot is what you will get out of nine 00 bucks. More out of #4 buck. Out to 150-200 yards, a shotgun is NOT something to discount.
How far does 00 shot “drop” at 100 yards (how far do you have to “hold over”)?