Killingbeans
Major Contributor
But DAW's, digital workstations that engineers use, they use 32bit, or ?
Yes, but as @antcollinet says, that's only to have plenty of headroom in the digital domain.
Once you convert 24 bits to analogue, it requires a dynamic range of 144dB through the whole playback chain to make use of it.
The best audio DACs doesn't do much better than 20 bits, and as far as I'm aware, the laws of physics makes it pretty much impossible to reach a DR of 130dB.
Also, a close up gunshot is roughly 140dB. At those levels it doesn't need to be sustained for more than a split second or repeated very much to give serious and permanent hearing damage.