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.4005 inches.

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Q: Diameter of a 40 caliber round?
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What is the caliber bullet?

Caliber is in reference to the diameter of the bullet. A .40 (which is what I have) is .40 inches in diameter. A .50 caliber is .50 inches in diameter (half an inch). So a caliber is the inches in diameter. Not including the 9mm which I cannot stand


Is a 45 caliber bigger than a 40?

Yes, a 45 caliber bullet is bigger than a 40 caliber bullet. A .45 is0.45 inches wide in diameter and a .40 is 0.4 inches in diameter.


Which caliber is from largest to smallest a 380 caliber a 32 caliber and a 40 caliber?

.40 S&W cartridge, bullet diameter = .401" .380 ACP cartridge, bullet diameter = .355-.356" .32 ACP cartridge, bullet diameter = .311 - .312"


A 9mm round is equal to what caliber?

The 9mm round measures .356 inch in diameter. a 380 is 95 gr 9mm 124gr 40 is180 gr 45 is 230 gr


What does caliber mean in relation to bullets?

Caliber means the diameter of the bullet. A .40 caliber cartridge has a bullet that is .40 inches in diameter. A 9mm cartridge has a bullet that is 9 millimeters in diameter. Yup...reminds me of Joe the Human Cannonball at the circus...Poor Joe died but they couldn't find a replacement of his caliber.


What is the difference between a 9mm and 40 caliber bullet?

The .40 is a larger diameter round. The projectile has a dimension of .4005, versus the 9mm Parabellum, which has a dimension of .356. Of the two, the .40 is the more powerful cartridge.


Bigger caliber .40 or 9mm?

The .40 is larger in diameter and (normally) has a heavier bullet.


Which is a bigger handgun a 40 caliber or a 45 caliber?

Either platform can be larger than the other. The 45 has the larger projectile. Caliber is defined as the diameter in fractions of an inch, so .40 caliber is smaller in diameter than .45 caliber. Caliber can also be defined in the metric system, measured in milimeters. The .40 caliber cartridge is equivalent to 10mm in diameter. As noted, the size of a handgun can vary widely within one caliber, so it is perfectly reasonable to have a smaller handgun crafted in a larger caliber.


What is the maximum range of a 40 caliber round?

In excess of a mile.


Which is a bigger caliber a 40 or a 45?

Assuming the question is in regard to firearms and ammunition, you can read the "caliber" of a round as a decimal how wide the bullet is in inches. So a .40 caliber round is .4 inches wide, or about 10.16 millimeters wide. A .45 caliber round would be .45", so a little bit fatter than the .40 caliber round. The caliber doesn't tell the whole story of a round though, it doesn't say how long the bullet is, how heavy, how big the casing behind the round is, how much kinetic energy is hits with, etc. The .40 S&W round has an average of 425 ft/lbs of energy right at the muzzle, while the .45 ACP, a "bigger" round, has about 400 ft/lbs.


What is the difference between caliber and millimeter in ammunition?

They're both measurements of the diameter of the round (or the barrel). Caliber is a measurement in inches, and millimeters are millimeters. For instance, a .30 caliber bullet is 30 hundredths of an inch, or 7.62 millimeters in diameter.


What is the radius of a 68 caliber paintball round?

The radius of a .68 caliber paintball round is half of its diameter. Since the caliber is given in inches, the radius would be 0.34 inches.