How does this happen?

what’s the explanation for the shells going way over my head, but still connecting?

I don’t see any of those go " way over your head " , they are hitting like normal?

If you mean the ones you see like this:
image

Then that is a ricochet.

Your correct. i dont think i noticed that the first time when it happened. watched a few more times and i think i just missed the ricochet. my bad.