has to be a handgun..

[ironglow]

  .
   This is supposed to be the sound of a passing bullet..

  https://www.youtube.com/watch?v=TntTkJWIhek

  Handgun perhaps, i can tell you from experience..any high powered rifle bullet passing within 3 feet of your ears..gives a loud and definite CRACK !  ...Or a series of cracks, if it's a MG..

[DDZ]

I agree that is not a sound from a high velocity round. One time while hunting, I was walking up through a field. When someone on the other side of a grown up fence row was shooting at a buck. I don't know how close the bullets were whizzing by me, but they were close enough that I instantly laid flat on the ground. The sound was like a loud crack, and then the bullet smacking the ground. Which also made a pretty loud sound. I found out later it was a relative, that was shooting a 7mm mag. 

[BUGEYE]

I had a shotgun slug fly over my head up in Illinois.   It was a loud buzz.
I guess the air passing over the fins that hadn't been ironed out in the barrel made that buzz.

[Dee]

I've had several centerfire rounds go past me. I don't remember a hearing any kind of crack. I heard the bullets go by, and then the report of the rifle. 

[billy_56081]

I've heard the sonic crack as supersonic rounds went overhead. 

[Dee]

I've heard the sonic crack as supersonic rounds went overhead.

So have I, they happen immediately as the bullet breaks the sound barrier.

[Ranger99]

The first one I ever heard going
by with that WHEEEEEEEEEEE !
was the first I'd ever heard of a
" sound shot "

[ironglow]

.
  Bugeye's slug may have dropped below the sound barrier, and didn't have the familiar crack.  The rifle bullet as it flies by, continues breaking the sound barrier as goes, until it drops below 1100 fps.
 
  The shock wave is more or less like a cone shape, and the sound doesn't reach our ear until the bullet is past, thus the old soldier's phrase.."you don't hear the bullet that gets you"!  Makes sense, since the one you hear is long past.
 
   A case where a cop is involved in a shootout with handguns on both sides, he may not hear the crack, since most handguns don't break the sound barrier, even to start with.  Of course, at close range it would likely be difficult to sort trhe initial sound at the gun barrel..from any subsequent crack.

  Here's a little chart i found that explains the cone shape shock wave;
  https://www.researchgate.net/figure/Supersonic-bullet-shock-wave-description_fig1_224679640

  Have you noticed that when a jet plane passes over, if you want to see the plane, you should look some distance ahead of where the engine noise seems to be coming from ?

  I'll try to find an engagement on video which illustrates the sound.

[ironglow]

.
  Hey, I found one right off !  The action starts right in the opening seconds.  Notice the soldier wearing a helmet cam is not firing , but the crack is very distinct.
  Likely someone has shot directly at him, and he  knows it, since he  the troops take covterheard the sonic crack so clearly.
m.
  This is what it sounds like when the bullet comes close.  You can hear the shots crack overhead as the troops take cover behind a dirt berm.

   https://www.youtube.com/watch?v=7XisSI5oh34
     

[BUGEYE]

.
  Bugeye's slug may have dropped below the sound barrier

Yep, I found out who did it.  He was in our party and shot at a deer on the hill above him.
He was around 500 yards from me so that slug was just loafing along.
It made me duck.

[ironglow]

.
  But even 'just loafing along', a slug can do some real serious damage, due to it's sheer size.

[BUGEYE]

.
  But even 'just loafing along', a slug can do some real serious damage, due to it's sheer size.

Yeah, if it had hit me in the head, I would have been pushing up Daisys.