It is very similar to the Swedish test. The purpose is to demonstrate that you have trained for driven hunts. It is not an extremely difficult test, it just shows basic competence.

The cases were actually splitting near the base. I will try and take a photo when I get the chance.

Yes, I've checked the headspace. I checked it myself using the tape method, and had a smith check it when he adapted the base on a Viennese mount. Since then I have fired a grand total of 69 rounds through the rifle, so I don't think it is quite worn yet. I guess that's an assumption. How frequently do you recommend checking?