As it is written/labeled/stamped on the item. Cartridges of the World, any edition, will give you more information.
http://wiki.answers.com/Q/How_do_you_read_a_micrometer_and_caliber"
Do a Google search on Italian proof marks.
The easiest way to remember it, is by remembering .50=1/2 inch
.000345 that is just simple math right of the point the places start 10th 100th 1000th and so on read away okay, but, how did you determine the .00345? In other words, hwo do you read the caliber? How did you egt those numbers?
read top of barrel. it will tell you the caliber bullet it shoots............
They are made in several different calibers. Look on the barrel to read caliber markings.
Impossible to answer. Read and post all the markings on the barrel and receiver, then, someone might be able to help.
It could be a caliber persistent artery of the lip......You should look into this....You could have it removed if it is bothering you but read up on this first.....
No such thing. You can have small caliber but not low caliber.
It was manufactured in 1901. The people at the Cody FIrearms Museum can tell you what caliber it was when it was made (and it should still be the same if it has not been rechambered) if you send them the serial number and $50. Or you could read what is stamped on the side of the barrel.
the are also chambered for the 38 caliber, 9mm caliber and 22 caliber
What caliber of man are you looking for? What caliber of gun are you looking for?