I was thinking about how fire guns are very loud and how its worst in close environments (I had never shot a gun cuz im not american) and I remembered the Mirror room scene in John Wick Chapter 2.
I was thinking if by shooting once, many mirror could break because of the sounds of a gun alone. Has someone tried this or see it happen?
Certainly if you use a big enough gun.
With a pistol or normal gun, probably nothing will happen.
With an anti material rifle you might get some luck if you are close enough.
Or you just take a tank cannon or artillery, those should have plenty of muzzle blast.