Explosion sounds

[newbravado]

Maybe it's just me.

 

On a bombing run I can hear the 50 kg bombs explode behind me (1 second timer) most of the time, but I can't hear the 250kg bomb explosions ever.

Anybody else notice this?

[newbravado]

After another try I heard the 250kg explosion. It's no louder for a 250kg than a 50kg. 

Another 250kg had no sound. Maybe explosion sounds are sporadic.