Don't Mention It - New Zealand's Orwellian Approach to Terror, page-12

You may need to do more research.

Type of glass/type of shotgun shell/distance/etc.


This is a picture of regular glass shot with a shotgun from a distance.


Other glasses react differently, Laminated glass does not shatter, safety glass (tempered ) does shatter.



Accused mosque gunman Brenton Tarrant's car, with bullet holes in the windscreen, is removed from the scene of his Brougham St address. Photo / Claire Chambers
https://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=12213752