Been working on this one. I counted 14 frames from first visual of the shot to when the blast report is detected. At a frame fate of 29.97 frames per second, this calculates to about 0.467 seconds. With a speed of sound at 1150 fps = 537 feet distance between shooter and camera.
I don’t know how well this fits with the measurements of the site. Maybe there is some error in my calculation and welcome any review.