Hello kuduae,
Thanks for the reply.

I sure hope that is not the case. ? ? ? .... I likely paid 3 times the value of an 8x57 because it was advertised as an 11mm ... Here is the listing ...

" .... Item Description:

AUSTRIAN JOHANN PETERLONGO 11mm CAL RIFLE | Austrian Johann Peterlongo 11mm caliber bolt action rifle. 23" full rib barrel stamped "Johann Peterlongo Jnnsbruch Tirol". Austrian proofs. Blued finish. Checkered wood stock. Flip leaf rear sight. Double set trigger. Sling mounts. | Caliber / Ga 11mm | Barrel Length 23" | Serial Number NSN | Condition: Overall good. Light wear and oxidation. Bore is very good with light wear. Mechanically very good. ...."