The germanhuntingguns.com site is run by Larry Schuknecht of Dutchman Wood Works, see https://www.germanhuntingguns.com/larry-b-schuknecht-dutchman-wood-works/ . I don’t know if he is a member here too, but he is a founding member and archivist of the German Gun Collectors Association / GGCA http://www.germanguns.com/ .
I wrote that “Shooting Matches….” article for “Waidmannsheil!” Nr. 60, spring 2017, the periodical of the GGCA, where I frequently answer all sorts of questions about German guns and hunting. Larry added it to his website. Apparently he thought it to be of more interest than I do.
Waidmannsheil!
Axel