Is it the sound of the powder exploding then the bullet breaking the sound barrier? Is one of them the projectile itself impacting/exploding?
For clarity, I mean it like [this](https://youtu.be/FVQvH4qc5cg?t=22). What is the first, sharper sound, and what is the secind, softer sound?
In: Physics
Bullets travel faster then the speed of sound. This means that the bullets might hit the ground before the sound from the gun reaches you. It sounds like this is what you hear here. The first sound is from the bullets impacting the ground not too far away from the camera and the second sound is from the gun itself. These shots are taking at quite safe ranger but if you are getting shot at and they miss then you would expect to hear the bullet in the air first and then the impact behind you before you hear the gun. Experienced soldiers will listen for the different sounds to figure out from what direction the shot came from and how far away.
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