With a potential FCS at-large bid up for grabs, Montana (8-4, 6-2 Big Sky) used five first half turnovers by Montana State (8-4, 6-2) to build a 27-0 lead. Montana State gave up seven turnovers during the game.
Matt Hermanson finished with three interceptions, one shy of the single-game record for the Grizzlies.
Montana State scored with 5:59 remaining on Chad Newell's 1-yard run.
Jordan Canada scored two touchdowns, a 1-yard run and 4-yard reception, in the first quarter. He finished with 119 yards rushing.