https://germanhuntingguns.com/archives/barth-k-vienna/

I would hazard a broad guess on 8X50R Mannlicher. Lovely Austrian Mouusetrap w/ Jones Underlever lockup( „kurzer Schlüssel“), Viennese forend latch(Charles Harvey - Rigby) with what looks to be a deep body action? Any idea of tubeset length?


Hochachtungsvoll,

Raimey
rse