Caliber Conversion Chart

['88Scrat]

Title pretty well sums it up really. Does anyone know where I can find a chart that will tell what a caliber translates in the metric system?

A few I know for sure are that a 9mm = .36 and a .50 = 12.7mm

 

[zoomie]

1 inch = 25.4 mm. The rest is just math. What are you looking for? Any inch to mm table will do what you want.

http://www.engineeringtoolbox.com/inches-mm-conversion-d_751.html

 

[James K]

If all you want is to "translate" a bullet diameter from one system to the other, there are on-line conversion sites that will do the job for you. But all they will do is tell you that ".38 inch" translates to 9.66 mm. They won't tell you that a .38 Special bullet is really .357" or that .38 Special is not the same as .38 S&W. Or they will tell you that 9mm is .354", but not that 9mm Largo isn't the same as 9mm Steyr, but is the same as 9mm Bergman-Bayard.

If you want to find out what a U.S. cartridge is called in Europe or vice versa (like 7.62x63 is .30-'06) then you need a book like Cartridges of the World.

Jim

 

[emcon5]

Here is a good place to start:

http://en.wikipedia.org/wiki/List_of_cartridges_by_caliber
http://en.wikipedia.org/wiki/List_of_handgun_cartridges
http://en.wikipedia.org/wiki/List_of_rifle_cartridges

 

[mapsjanhere]

all the metric data you ever need

 

[gyvel]

Interestingly enough, that chart lists the .303 Savage as having a .311 diameter bullet.

 

[mapsjanhere]

That's because .311 is SAAMI spec; 308 is just what everyone uses, according to Barnes's Cartridges of the World.

 

[MLeake]

I had thought that with the .308, the lands of the rifling were .308, while the bullet was actually .311; I could be mistaken.

 

[mapsjanhere]

No, in a 308 Win, the lands are .300, the bullet .308 (which is why for a .303 a .311 bullet diameter is reasonable).