Raimey, do you think you can "highlight "the marks in question? As a general rule ,if a barrel has a proof mark I presume the barrel experienced that proof. We sometimes see smooth bored barrels proofed for a single projectile but normally used with shot(example-garden gun). One of the marks on the 9.3x82R barrel seems to be over stamped, if that is the one in question ,I can believe the barrel was proofed for bulleted ammo but mis-stamped with a mark for shot and then corrected by over stamping. I don't know of any shot loads for 9.3x82R. On the other hand, I didn't see confusing marks on either of the shot barrels.
Mike
