Some of these physics are interesting
As an EE, semi professional audio engineer and rifleman, we have some phenomenon that laymen struggle to understand.
When you shoot a bullet there is quite a lot going on, but let's limit it to this; when you hear the bang of the gunshot you are hearing two very different things, the gas expansion caused by the deflagrated gunpowder and the breaking of the sound barrier by a super sonic bullet. The uninitiated cannot differentiate the two when close to the muzzle.
However in long range shooting (several hundred to a thousand yards) you actually often times will send an observer down near the target if you are at an appropriate facility. It's called working the pits and the observer tends tothe target and radios feedback to the shooter. It's a very safe and common practice. There are no known examples of anybody getting gun rage from it and killing people. Also, very few accidents.
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Interestingly and you can kind of hear it if you listen for it on this video, is there are two sonic signatures associated with a single shot, the sound of the sound barrier being broken, which is very high pitch, and the expansion of gas at the muzzle. When downrange you will hear the high pitch sonic boom "instantly" and then the muzzle blast sometimes a few seconds later. New shooters really get a head trip with this. It's hard to understand for a while. If you listen to the video you can hear that the high pitch crack and the low pitch boom are separated by time and are not simultaneous from the perspective of the microphone.
What is interesting from an audio perspective is that when you get an ear for it with some lighter calibers you can start hearing the sonic boom and the muzzle boom at the same time. You can hear the high pitch and the low pitch simultaneous. I remember just hearing it one day, a high pitch crack and a low pitch boom at the same time. Two different acoustic signatures. You can only do it with some of the lighter calibers, and the physics there require too much typing.
Something about the relationship between the case capacity and the mass of the bullet matching that case capacity (heavier bullets are more audible). I will add that the echo/reverb of the high crack is much easier to hear, and once you hear it you can't not hear it.
Either way, I don't recall when but one of those first houses from the video obviously starts burning for a second before the pressure wave hits it and one day I just realized it, then you can't watch the video without noticing it. Two different events.