Physical barrier spell, Fluff vs RAW Options

[Pendaric]

This has been touched on before but it is a rules oddity depending on what your stance you take on the description.

The crux of my point is this:
The physical barrier created by the spell is destroyed if penetrated.

The RAW of bullets hitting barriers for the sake of "breaking through" doubles the barrier rating.

The description for the above RAW is that bullets are good at making little holes and but not big holes. The attempt to "break through" assumes making a 1/2 m hole for someone to crawl through.

So does the bullet pass through the barrier ending it, without "breaking through" per RAW?
Or does the bullet bounce off the barrier if insufficent to "break through"?
Should the bullet ignore the doubling to the barrier rating for penetration due to making small holes?
Or finally does the bullet have to "break through" per RAW to end the spell?

Currently i am running in my game with the latter. If in doubt my first instinct is to stop my harsh GM gene tooling over my players by strict adherence to the rules. Also this means the barrier spells are worth while.
However I am open to revision, with convincing argument.