Igorrock:

You are correct...but all the 9.3s used the length of the case in its designation, like there is
a 9.3x57, 9.3x62, 9.3x64, 9.3x72, 9.3x74...where the last number: 57, 62, 72, 74, etc. is the case length in mm. So...I used the "64" to indicate like the others...the case length of 64mm.
The 9.3 Newton case length is 64 mm.
The 9.3x70 magnum has a case length of 70mm....hence the 2nd number indicating case length...so is what I used to indicate the 9.3 Newton has a case length of 64mm.
I have a photo of the case comparison...but don't know how to post photos on this site?! or I'd post it for you to see the comparison...

Best regards,

Tom

ps. I used to have a Finnish/American friend...my sister used to correspond with a Finnish girl
in Helsinki