Has a College Football game ever ended 71-10?
Exactly once. On October 31, 1987, Oklahoma beat Kansas 71-10, and no College Football game before or since has ended that way. When it happened it was a scorigami, the first 71-10 in league history.
That makes 71-10 the 1820th most common final score out of 2,216 that have ever occurred in College Football. One point away, 72-10 has happened 4 times and 71-11 has happened never.