the calibre
.355 bullet diameter
If you are talking about a .45 acp The bullet diameter of .451 equates to 11.5mm. If you are talking about a bullet used in rifle calibers (45-70) etc.then the bullet diameter of .457 equates to 11.7mm.
The main difference between a 9mm and a .45 caliber bullet is the diameter. A 9mm bullet has a diameter of 9 millimeters, while a .45 caliber bullet has a diameter of .45 inches. The .45 caliber bullet is larger and generally heavier than the 9mm bullet, resulting in differences in recoil, speed, and stopping power.
Both terms describe the diameter of the bullet in decimal parts of an inch. For example, a .357 bullet is 357 thousands of an inch in diameter and the .45 bullet is 45 hundredths of an inch in diameter. These labels of bullets are most common in the United States. Much of the world refers to bullet sizes in metric terms, i.e. 9mm means a bullet that is 9 millimeters in diameter.
The diameter of the bullet casing, measured at 7.3 mm, is 7.3 millimeters.
.355
It's the same. The caliber of a bullet is its diameter.
The .357 part of the name means that the bullet diameter .357 inches. I do not know what the "Magnum" means in the name.
It is how thick a bullet is, measured through the thickest part of the bullet, from one side to the other.
A 22 caliber bullet is 22/100 inches in diameter. A 7.62 mm bullet is 30 caliber or 30/100 inches in diameter there is no such thing as a 7.62 caliber bullet
The bullet is 22/100ths of an inch in diameter.
As far as diameter, there is very little difference. A .357 is .358 in diameter and a 9mm is .356 in diameter.