Has an Olympic Hockey (Men) game ever ended 17-6?
Exactly once. On January 1, 1964, Japan beat Australia 17-6, and no Olympic Hockey (Men) game before or since has ended that way. When it happened it was a scorigami, the first 17-6 in league history.
That makes 17-6 the 75th most common final score out of 99 that have ever occurred in Olympic Hockey (Men). One point away, 18-6 has happened never and 17-7 has happened never.