I've just read the old RAF EMER you refer to Buccaneer and blow me down......., you're right! I mean exactly right in what you say....., BUT! So I took an N9 onto the 25m indoor range over lunch time and at the lowest range, it does shoot too low. That would seem to confirm that the No7 sight does indeed have a 25yard marker on the left side.

AIncidentally, the RAF EMER also says that some No7's have solid new made barrels (my BS1740 does.....) and some, made from new bodies, are manufactured without the original No4 ejector screw hole. Interesting. Does anyone out there have a 'new build' rifle without the ejector screw hole?