Texasjack,
I quickly checked, the 11.2 gram bullet is longer than 26mm,the 26mm long bullet was the 9 gram Round soft nose bullet(DWM).
Gunwolf,
you could very well be right,but my experience with another maker is different. I had Heym "mount" a Nickel scope I bought in the Rod and Gun club and delivered to them, on my Heym BBF.It was invoiced from them to me, and all indications on the invoice and discussions with them, indicated they had done the work in their shop.On my second tour,I carried a Sauer BF to them requesting they mount a scope I had on it.They told me then that they had scopes mounted "outside", as a service for owners of Heym guns, but not other makes. The "Meister" walked outside with me and pointed out the shop of Herr Walter Grass and indicated that he was the one that mounted scopes for them.This was to avoid slowing down their production line. I went to Herr Grass's and had him mount the scope on my Sauer.Resulting from this work I made friends with Herr Grass and for 6 years,I spent most Sat.mornings in his shop.During this time I observed him mount several scopes for Heym, as well as other work.He made and insalled the sideplates on the famous Heym/Ruger they made for John Amber.When Tom Turpin reccommended Heym build rifles especially for the American market and drew up the design for it, Herr grass did the metal work on it as well.This rifle was written up in "Gun Digest", some years ago.All this work was done outside the Heym facility, by other workers, but was just as much Heym work as if it was done there.This is no different than having special engraving done outside.Another member of this board,Raimey,makes a study of "touch marks" placed on old guns by outside workmen, so this system has been used many years and is accepted by everyone.While I still may be wrong,it is my opinion that Merkel likely used the same system. For what ever it's worth,Herr Grass was "Meister" at Heym until he went "self standing" in 1969,so much of his previous work was done under their roof anyway.
Mike