The act of head-butting involves a Player making deliberate contact, or attempting to make contact, with an opponent by leading with their head and/or helmet, whether contact is made or not.
Regel 47.2: Double-Minor Penalty
The Referee shall, at their discretion, assess a Double-minor Penalty to any Player who attempts to “head-butt” an opponent.
Regel 47.3: Major Penalty and Game Misconduct Penalty
The Referee, at their discretion, may assess a Major Penalty and an automatic Game Misconduct Penalty if, in their judgment, the Player recklessly endangers their opponent by “head-butting”. Such assessment of reckless endangerment shall be based on the severity of the infraction, severity of the contact, the degree of violence and the general reprehensibility involved.