I just wanted to make available another source in another language than english. Why is this source not used - like by KK - because it is in German and because it is difficult to get to.
One of the reasons of a forum is to make sources available to the interested.
Also this source just shows another observation of a foreign officer about the Russian artillery.
In case one is relying purly on the very thin literature in English - one would fail miserably to obtain a blanced view about the Russian artillery or Napoleonic history in general.