I always found 5.56mm more than sufficient, personally. Ridiculous that I did a SEP ST the other day where the paperwork took longer than the flight (and I didn't rush the candidate on the flight!!). I suspect the responsible person(s) at the CAA has little/no experience of examining within the industry - the EASA FEH is due out in 2013, according to their working group. I wonder how they fail to see the problem with that?