investigating A-10A Gau 8 sound incorrect

[F4lcon_D]

Hello, I've been testing sounds in DCS and stumled upon a possible bug. Gau-8 sfx has 3 distinct parts:

1. Bullet supersonic "crack"

2. Impact sound

3. Sound of the gun itself 

I might be wrong about this, but based upon my knowledge and understanding of physics the cracking sound and the impact sound should be heard almost simultaneously by an observer close to the impact point, however it is not the case. The cracking sound arrives noticably earlier. I'm attaching a link to a youtube video I recorded demonstrating the effect I'm talking about. Link: https://youtu.be/dpbDkOFc

[NineLine]

I'll have our sound guy take a look, thanks.