Thanks,
After slogging through about a thousand posts at several single shot forums, I found a link to a German site that someone posted. LO and BEHOLD, I found the maker.
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The Büchsenmacher Ernst Friedrich Büchel - even also outstanding contactors - developed in the year 1909 particularly for the rifle competition shooting (high-speedshoot) with the federal shooting a new system, whatever it called Concurrenz.
Here it depended on how much shot brings contactors within 2 minutes on the disk and how it reaches many rings thereby. It shot thereby at a disk, which had only eight circles, the center began however with „the 1 “. It was actually a competition, with which only enormous amounts were fired by powder and lead!
With the system Concurrenz was the technical advantage all other systems opposite that the catch block went completely downward and the empty case fell immediately to the side, so that equal a new cartridge could be introduced.
The last improved system developed Büchel before the olympic plays 1936 in Berlin, the Büchel championship can with adjustable cheek and very short firing pin way.
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Had to use an online translator hence the stilted English.
Here's a link to the page I got it from.
http://www.feuerbixler.de/
Use the navigation bar on the left and click
Feuerstutzen
and then
Systeme & Verschlüsse
The Harry Pope barrel is an intriguing twist.
NOW to figure out what it eats!! That will be an adventure I figure.