The Bruins shot 63.8 percent from the floor (30 of 47) and made 7 of 11 from behind the 3-point arc. Jacksonville State shot 25 of 55 from the floor and 5 of 17 on 3-pointers.
Darion Rackley led the Gamecocks with 15 points, and scored eight of those at the free-throw line.
Jacksonville State (7-10, 1-1 OVC) led by two points at the break, and was ahead by one point with 16 minutes remaining. Belmont went on a 9-0 run with 13:22 to play -- after leading by one -- to go up by 10 points.