Not sure Clint Eastwood ever topped this scene.....

69DodgeMan said
No, there's definitely 6 fired. One is shot when he isn't pictured, but you can hear it in the background while the camera is on something else.

Its right before the shot he fires through the windshield of the car and hits the driver.

When the camera is showing the driver inside the car taking off from the heist. That's where the missing 6th shot comes in.