The 'dove-tail' versus 'chopperlump' debate continues unabated I see!
Does one consider a 1st type (pre 1893-ish) H&H Royal a best gun. I certainly would and I have never seen one with chopperlump barrels that are definitely fitted as original! And I have worked on/sold quite a few!

This is like the 'thru-lump', 'stocked to the fences', fully engraved definitions: all have notable exceptions. Each maker defined their own 'Best Gun' specification. Yes, there are general rules but I have learnt the hard way that making generalisations about ANYTHING in the British gun trade is asking to be shot down!!