Could it be that the 9.3x62 is to the 375 (ish) and even 416 calibres what the 7x57 and 308 win are to the 7mm and 308 / 300 / 8mm calibres.

ie it does every thing the bigger cartridges do, but without all the fuss, bother, cost etc.

I shot a friends 9.3x62 Blaser R8. He never told me it was the 9.3 barrel - just thought it was his normal 308 - perhaps with a bigger bullet - he handed it to me loaded but uncocked.