why would a glass bottle bounce off a steel frame? imho it would shatter on impact and spill all over and underneath it? we need Mythbusters set on this one.
a few example:
source: https://www.oryxspioenkop.com/2022/02/attack-on-europe-docum... (you can find way more cope cages when opening the pictures for damaged, captured and abandoned russian tanks in the list).