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-   -   cartridge designation? (http://www.firearmstalk.com/forums/f15/cartridge-designation-77789/)

potentialglock 12-05-2012 06:36 PM

cartridge designation?
 
What's the second number in the cartridge designation. Like 9x19 or 7.62x39 etc. Is the second number the bullet length or cartridge length?

willfully armed 12-05-2012 06:48 PM

Mm in length for metrics.

Overkill0084 12-05-2012 06:51 PM

Enjoy:
http://en.wikipedia.org/wiki/Caliber#Cartridge_naming_conventions

c3shooter 12-05-2012 07:59 PM

Bear in mind that the diameter is the NOMINAL diameter. A .22 Magnum is NOT the same diameter as a 22 LR. The 9mm Parabellum and 9mm Makarov or NOT same diameter. Sometimes the name itself is a bit screwy- .38 Specials are NOT .38 inches in diamter, etc.

locutus 12-06-2012 10:02 PM

The second number is the case length.


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