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?
The answer probably needs to have a whole lot of “it depends”
What kind of firearm, what kind of glass, thickness of the glass, how far away was the gun when it was fired, etc. will probably all have an effect, and maybe even some more exotic variables, resonant frequencies, atmospheric conditions, temperature,angle you fired the gun at relative to the glass, etc.
Glass absolutely can be broken by vibrations and pressure waves similar to those made by a gunshot, and I would probably expect a high caliber supersonic round fired within inches of a thin piece of weak, brittle glass to break the glass, and on the opposite end of the spectrum, a low powered subsonic round fired far away from a thick piece of strong tempered glass I would expect to have little to no effect whatsoever.
Those are both fairly extreme examples, and I certainly don’t have the science/mathematic background to tell you where the limits are in the middle.