Here's the exact rule for Charging...
Quote:
Rule 42 - Charging
42.1 Charging - A minor or major penalty shall be imposed on a player who skates, jumps into or charges an opponent in any manner. Charging shall mean the actions of a player who, as a result of distance traveled, shall violently check an opponent in any manner. A “charge” may be the result of a check into the boards, into the goal frame or in open ice.
...
42.3 Major Penalty – The Referee, at his discretion, may assess a major penalty, based on the degree of violence of the check, to a player guilty of charging an opponent (see 42.5).
...
42.5 Game Misconduct Penalty - When a major penalty is imposed under this rule for a foul resulting in an injury to the face or head of an opponent, a game misconduct shall be imposed.
42.6 Fines and Suspensions – Refer to Rule 23.6 – Fines and Suspensions – Physical Fouls Category. If deemed appropriate, supplementary discipline can be applied by the Commissioner at his discretion (refer to Rule 28)
|
It gives the ref pretty broad discretion in making the call.