



The driving band looks identical to the one from Skoda 8.35cm experimental guns (prior to the adoption of the 8cm M17 Skoda and 8cm M18 Bohler guns).
Later, 8.35cm was also used by Czechoslovakia in various guns.
Here is a GS body from one of those experimental guns. By pure coincidence, i`m working on an article on these guns and their ammunition.
The body, below the band should have a 44mm long section with 83mm diameter.
The driving band has 28 grooves and is 30mm wide.
@AKON_ i only have the few pages from Christian Ortner`s book with the description of the guns, if it helps you.
I am aware there is at Rovereto one gun (in my opinion - unique in the world) named 8.35cm Schartendemontier Kanone M17, which is made from the carriage of the 10.4cm M15 gun and a barrel in 8.35cm caliber, made with the breech from the former experimental field guns and a very long barrel (we know this because of the markings on the breech).Are you referring to Austro Hungarian experimental 8,35cm M17 long range gun?
The actual development is a bit more complex than that. There is not only one single gun between the 8cm M5 series and the M17 Skoda.-The predecessor of the 8cm Feldkanon M.17 Skoda type is the experimental type 8cm Feldkanon M.16 Škoda .