[keith A]

I take your point Graham but would argue that every bit of information I use is out there already. My input is that this is stats, and both proves/disproves the accuracy of claims by several books. If I can't test it then what's the point of the forum or the books produced by the authors of the works I acknowledge? I am sure we all realise that accuracy in air combat is influenced by several factors. Fulmars have been a favourite aeroplane of mine since I encounter them in the "Victor" comic in the 60's.