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mrerick · 09-07-2019, 10:15 AM

The designers and manufacturers of cartridges are the ones that name them. There is little consistency in the way that they are named.

Sometimes they reflect metric measurements of the bullet and case. Sometimes the inch system. Sometimes it's completely unrelated to the bullet diameter (as with .38 Special). I expect that some of the naming is marketing related (the number is larger therefore the cartridge must be "better", etc...)

Some cartridges have multiple names depending on where they are manufactured and sold:

9mm short = 9mm kurz = 9mm corto = 9x19mm = .380 acp...

9mm Parabellum = 9x21 = 9mm Luger....

There are others like this... some have very different dimensions like the 9mm makarov cartridge, which has no relationship to the 9mm Luger cartridge.

You can find the actual specifications that have been standardized by SAAMI at:

https://saami.org/technical-informat...mber-drawings/

09-07-2019, 10:15 AM	#3
mrerick Super Moderator - Patron LugerForum Life Patron Join Date: Dec 2009 Location: Eastern North Carolina, USA Posts: 3,925 Thanks: 1,377 Thanked 3,140 Times in 1,520 Posts	The designers and manufacturers of cartridges are the ones that name them. There is little consistency in the way that they are named. Sometimes they reflect metric measurements of the bullet and case. Sometimes the inch system. Sometimes it's completely unrelated to the bullet diameter (as with .38 Special). I expect that some of the naming is marketing related (the number is larger therefore the cartridge must be "better", etc...) Some cartridges have multiple names depending on where they are manufactured and sold: 9mm short = 9mm kurz = 9mm corto = 9x19mm = .380 acp... 9mm Parabellum = 9x21 = 9mm Luger.... There are others like this... some have very different dimensions like the 9mm makarov cartridge, which has no relationship to the 9mm Luger cartridge. You can find the actual specifications that have been standardized by SAAMI at: https://saami.org/technical-informat...mber-drawings/ __________________ Igitur si vis pacem, para bellum - - Therefore if you want peace, prepare for war. Last edited by Vlim; 09-07-2019 at 12:53 PM.