different folks aim different places...the idea is to put pellets in the head and neck taking the brain and spine out...
personally i aim right below the head. this puts pellets in the head and neck very well...yes...i send a small bit of pellets over his head and wouldnt if i aimed lower, but i see no need to aim lower and dont like blown up beards and hevi shot will break your teeth

i guess you could say i aim where the feathers start on the neck...
ive seen guys on TV shoot them where the neck meets the body...it folds em...but man...feathers everywhere...seen beards blown off...and im sure theres about 200 pellets in the breast...my shotgun shoots point of aim...half the pattern above my bead and half below it...i dont wanna aim any lower than i do.