556 is plenty for hog in the common 50-200lb range, especially if your using 60+ grain softpoints
you prolly need to redo any classes as your "instructor" doesnt seem very well informed. no telling what else he has told you that isnt correct.
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
"I crapped my pants to avoid the draft!!" -Ted Nugent