What would a hull breach look like?

[JoeStrout]

All fair points.  It's easy enough to find metal shot with guns: many street signs in rural parts of the country suffer just such damage.


And this is the closest analogue I think we're likely to find to a space colony hull holed by an impactor.  But it doesn't take air pressure into account.  Again, I think that won't affect the shape of the hole, but it's hard to be sure.

Also, you always have to be careful with scale tests... some effects scale differently than others, which can lead to surprising effects.  So scale test results should always be suspect unless you also have detailed theory to back them up.