Disclaimer - This is NOT a machine gun - each shot was actuated by hand. Frames inbetween shots were removed to keep the video compact. What is shown is the Boberg XR9-S mounted in spring-loaded Ransom Rest. Recording speed is 1000 frames/sec using the Casio EX-FH100 digital camera.
About 1000 watts of incandescent and flourescent light was used. Note that the 8th and last shot ejects at a slightly different angle since it is not hit by another round from below.