JoeSpareBedroom wrote:
wrote in message
...
On Wed, 03 Oct 2007 17:11:27 GMT, "JoeSpareBedroom"
wrote:

Tom can explain how 62 calibre equates to 76mm. He knows a lot about
guns.

For small arms, a number like .45 cal means .45 of an inch. Assuming big
guns are the same way, all you need to do is convert to millimeters.


In naval rifles "caliber" refers to the barrel length as a ratio to
its bore. a 5"/38 is 5" bore and 38 times that, long. (190")
The same is true of a 3"/50 or a 16"/45 (the North Carolina class
battleship gun) of the 16"/50 (used on the Iowa class ship)
There are also 3 classes of ammo.
The 3"/50 uses "fixed" ammo. A complete round like small arms ammo.
The 5" guns use semi-fixed ammo, a shell casing with the propellant
and a separate projectile. This gives you a lot more versitility in
your fire.
The big guns like the 16" use bags of powder and the projectile. This
is mostly to make it manageable for the crew but it does allow more
versitility too..


OK, so what's a 76mm gun, then?




Why, it is a gun a silly millimeter larger than a 75 millimeter gun.