[quote=“DocAV”]To fully understand why DWM ( and FN) used cases headstamped with an Argentine contract headstamp to make Kortnek ammo for the Boers, one must undertand case making practices of the period…Factories made big runs of cartridge cases, but only loaded them as Orders required to be filled and despatched. So a cartridge case made in say, 1896 ( and so HS) might not be “filled” and despatched until a year or more later.
Factory over-runs also account for excess “dated” cases. This disconnect between case-making and filling continued up to WW II ( at least in peace time) also because many countries also bought empty cases to fill “at home”, to supplement complete cartridges, or whilst their own native ammo plants were being established. ( as did Argentina in the 1930s, etc).
Further, the urgency with which these lots of Kortnek were assembled…(about 1900)…DWM would have used whatever cases were in stock at the time, giving priority to the Boers over long term contracts with Argentina…And both DWM AND FN had been doing in-house experiments from 1898 or so, with the Kort-nek design, well prior to the Boer delivery.
Of course, the whole concept petered out with the demise of the Boer Republics in 1902, and the realisation of the chamber erosion problems in 7x57 chambered rifles… and another “7mm” to just confuse everyone was not a good commercial decision.
On another tack, (“lateral thinking”)…might the 7x54 have had any influence on Pederson in his development of the 7x53 (Aka .276 Pedersen semi auto cartridsge???), or was this just an example of separate development leading to a common result???
You are right DocAV, regarding your last question, I think that DWM was not experimenting with nothing, in the hurry, they loaded the 7x57 Boer ammunition with whatever they had at hand, in this case, the large amount of cases for the Argentine contract, by the way the US military observer attached to the Boer forces wrote about the extraction problems that some soldiers reported from the battlefield using the Kortneck.