The Firing Line Forums - View Single Post - What is the difference between Caliber and mm??

Chad Young · May 9, 2001, 10:53 AM

Brasso-

Actually, there are TWO 9x23 rounds. One is the 9mm Largo or 9mm Bergmann-Bayard. this is a early 20th century round of limited power. The 9x23 Winchester is an early 90s IPSC round designed to make Major in IPSC. In theory, one could fire the 9mm Largo in 9x23 guns, but going the other way would almost certainly destroy your gun!

For even more confusion, there are three 9x18 rounds - 9mm Makarov, 9x18 Police (or Ultra), and new Russian 9x18 "super" which is kind of a +P Makarov round.

All are different and not readily interchangeable!

May 9, 2001, 10:53 AM	#15
Chad Young Senior Member Join Date: September 20, 1999 Location: Gainesville, FL Posts: 601	Brasso- Actually, there are TWO 9x23 rounds. One is the 9mm Largo or 9mm Bergmann-Bayard. this is a early 20th century round of limited power. The 9x23 Winchester is an early 90s IPSC round designed to make Major in IPSC. In theory, one could fire the 9mm Largo in 9x23 guns, but going the other way would almost certainly destroy your gun! For even more confusion, there are three 9x18 rounds - 9mm Makarov, 9x18 Police (or Ultra), and new Russian 9x18 "super" which is kind of a +P Makarov round. All are different and not readily interchangeable!