...Dan - I don't think there is any useful information in the video. I've seen this one before and was surprised at the lack of any real measurements. In one of his videos the view is from the other side of the test stand. It shows an enormous solenoid mounted to the same frame as the gun and the stroke on it would suggest a huge kinetic impulse would be generated when it was energized. I didn't see any transducers or means of capturing their outputs. Am I missing something?