Spot,
I'm not. No offence but its typical American slopiness in adopting European cartridges ... the same that brought us PMC 6.5x55 ammunition/cases with 0.473" head diameters which caused "interesting" issues when fired in ex-mil M96 rifles. The 9.3x62 is in the same boat ... its not a 30/06 case head ... that some get away with using 30/06 brass is probably due to tight chambers and malleable brass. Sometimes it works ... sometimes it doesnt.
Cheers...
Con