This is in 8X57 JRS, not JR and is a sleeper buy for someone. Load ammo with .323 standard 8mm bullets; you won't have to mess with "J" bore ammo. All post war Sauers were chambered for the "S" bores, unless special ordered, and probably not even then.

https://www.simpsonltd.com/products/z23288


Hunt with Class and Classics

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Acquit v. t. To render a judgment in a murder case in San Francisco... EQUAL, adj. As bad as something else. Ambrose Bierce “The Devil's Dictionary”