Crit on turrets with graves

If you crit a minion besides a turret or inhib with graves some bullets will richochet of to the side and hit the turret/inhib and it will crit for max damage if you have infinty edge. I have no tools to take a picture or video proof it. But go into a bot game with graves and go full crit and shoot minions near the turret/inhib and it wil crit the turret