There is quite a lot of pressure put outside from the beer of a full bottle, but that little bit of air is probably enough to cause it to implode at some point.

There is quite a lot of pressure put outside from the beer of a full bottle, but that little bit of air is probably enough to cause it to implode at some point. I'll be honest; I have no idea how to estimate that. I'm sure there are folks on here who can (and might). It's probably not as deep as you'd think.