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It’s the difference between imperial and metric. A caliber is one one-hundredth of an inch, while a millimeter is one tenth of a centimeter (one thousandth of a meter). There are about 4 caliber per millimeter, but like most metric-imperial conversions it’s not exact.What Caliber is 9mm? 9mm bullets are . 380 caliber. Caliber refers to the diameter of the cartridge / internal diameter of the gun barrel bore.Caliber is the approximate internal diameter of the barrel on a particular firearm or the diameter of a bullet and is usually expressed in inches or millimeters. In addition to using different units of measurement, different countries sometimes use different methods of measuring caliber.
Millimeter [mm] | Caliber [cl] |
---|---|
0.1 mm | 0.3937007874 cl |
1 mm | 3.937007874 cl |
2 mm | 7.874015748 cl |
3 mm | 11.811023622 cl |

What is the caliber of a 9mm?
What Caliber is 9mm? 9mm bullets are . 380 caliber. Caliber refers to the diameter of the cartridge / internal diameter of the gun barrel bore.
Are caliber and mm the same?
Caliber is the approximate internal diameter of the barrel on a particular firearm or the diameter of a bullet and is usually expressed in inches or millimeters. In addition to using different units of measurement, different countries sometimes use different methods of measuring caliber.
Bullet Comparison | Calibers and Bullet Measurements Explained
Images related to the topicBullet Comparison | Calibers and Bullet Measurements Explained

What is .22 caliber in mm?
22 caliber, or 5.6 mm caliber, refers to a common firearms bore diameter of 0.22 inch (5.6 mm). Cartridges in this caliber include the very widely used . 22 Long Rifle and .
How many caliber is a millimeter?
Millimeter [mm] | Caliber [cl] |
---|---|
0.1 mm | 0.3937007874 cl |
1 mm | 3.937007874 cl |
2 mm | 7.874015748 cl |
3 mm | 11.811023622 cl |
Is a .38 the same as a 9mm?
38, . 357, . 380 auto and 9mm ammunition are all the same caliber. (Caliber is the size of the projectile, or bullet.)
What caliber is ak47?
Built around a 7.62-mm round with a muzzle velocity of some 700 metres per second, it had a cyclic firing rate of 600 rounds per minute and was capable of both semiautomatic and automatic fire.
What is 38 caliber in mm?
Cartridge name | Bullet diameter | Case length |
---|---|---|
.38 Long Colt | .357 in (9.1 mm) | 1.030 in (26.2 mm) |
.38 Special | .357 in (9.1 mm) | 1.15 in (29 mm) |
.38 ACP | .358 in (9.1 mm) | .900 in (22.9 mm) |
.38 Super | .358 in (9.1 mm) | .900 in (22.9 mm) |
See some more details on the topic what is the difference between mm and caliber here:
What is the difference between mm and caliber? – Wikipedikia …
It’s the difference between imperial and metric. A caliber is one one-hundredth of an inch, while a millimeter is one tenth of a centimeter (one thousandth …
Caliber vs MM – Sage & Braker
Caliber is the approximate internal diameter of the barrel on a particular firearm or the diameter of a bullet and is usually expressed in …
What is the difference between Caliber and mm?? – The Firing …
Caliber is the measure. The units are expressed in millimeters or inches. 9mm is a caliber. So is .452, as in .45 ACP.
ELI5: Difference between caliber and mm : r/explainlikeimfive
Caliber refers to the size of the bullet. A 9mm pistol shoots bullets that have a diameter of 9 millimeters. The 50 cal is a short way of saying 0.50 inch …
What mm is a 308 caliber?
308 Winchester is so named because the bullet is . 308″ in diameter. Converted to metric, that’s 7.82mm, but most people would refer to it as a 7.62 because of its military distinction.
How many mm is a 45 caliber bullet?
Caliber | Metric caliber | Typical bullet diameter |
---|---|---|
375 | 9.5 mm | 0.375 in, 9.53 mm |
40 | 10 mm | 0.400 in |
44 | 10.9 mm | 0.429 in |
45 | 11.43 mm | 0.451–0.454 in |
Why is it called 9mm?
The literal translation reads “If you seek peace, prepare for war”. Once approved by DWM, the 9x19mm cartridge was monikered the 9mm Parabellum in reference to the last two Latin words of the DWM company motto. Georg Luger also developed the P08 Luger pistol to fire his new standard 9mm round.
Are .223 and .22 the same?
223 and . 22LR are the same, the rounds have the same bullet diameter. While the casing for the rounds are not the same and the bullets may look wildly different, they measure the same diameter of . 223″.
What caliber is an AR 15?
The AR-15 is nominally chambered in .223/5.56mm NATO, but many variants have been produced in different calibers such as .22-LR, 7.62×39mm, 9×19mm Parabellum and shotgun calibers.
Basic Handgun Calibers Explained – Semi-Automatic Ammo Breakdown
Images related to the topicBasic Handgun Calibers Explained – Semi-Automatic Ammo Breakdown

What is 35 caliber in mm?
.35 Remington | |
---|---|
Bullet diameter | .358 in (9.1 mm) |
Neck diameter | .384 in (9.8 mm) |
Shoulder diameter | .405 in (10.3 mm) |
Base diameter | .458 in (11.6 mm) |
How many mm is a 50 caliber?
50 Caliber equal 12.7 Millimeter.
Why is a 22 called a 22?
A 25-percent increase in powder gave the same 29-grain bullet a velocity of 1,028 fps from a rifle. Since the case was longer, this cartridge gained the moniker of . 22 Long, and the parent case’s name was changed to the . 22 Short.
Is 9mm or 357 more powerful?
357 Magnum is better because it’s more powerful, or that 9mm is better because you can carry more of them and can be more accurate with it.
Is .357 bigger than 9mm?
357 Mag case is a little over half an inch longer than the 9mm and the overall length slightly less than half an inch. This increase in length allows the . 357 Mag to hold a greater amount of powder to launch a similar caliber bullet.
What caliber is a 357 Magnum?
357 Magnum, or 9×33mmR as it is known in unofficial metric designation, is a smokeless powder cartridge with a . 357-inch (9.07 mm) bullet diameter. It was created by Elmer Keith, Phillip B.
Is AR-15 better than AK-47?
AR-15 rifles are lighter and have a higher rate of accuracy than the AK-47, but the AK-47 is considerably cheaper and more dependable in comparison. Both are extensively used by the military and police, as well as for general purpose hunting rifles and self-defense.
What does AR mean in guns?
The AR in “AR-15” rifle stands for ArmaLite rifle, after the company that developed it in. the 1950s. “AR” does NOT stand for “assault rifle” or “automatic rifle.” • AR-15-style rifles are NOT “assault weapons” or “assault rifles.” An assault rifle is fully.
What caliber is an AR 10?
AR-10 | |
---|---|
Cartridge | 7.62×51mm NATO .308 Winchester 6.5mm Creedmoor |
Action | Gas-operated, rotating bolt (Direct expansion of gas on surfaces of Bolt Carrier) |
Rate of fire | 700 rounds/min (fully automatic), variable (semi-automatic) |
Muzzle velocity | 820 m/s (2,690 ft/s) |
Is a .38 more powerful than a 9mm?
Standard pressure . 38 Special only produces 264 foot-pounds of force (147-grain bullet at 900 feet per second out of a 4-inch barrel), while standard pressure 9mm can produce 365 foot-pounds of force (124-grain bullet at 1,150 feet per second). This is 38.25% more energy at the muzzle in favor of the 9mm.
Ammo Types Calibers
Images related to the topicAmmo Types Calibers

Is .357 the same as .38 Special?
…
Comparison chart.
.357 Magnum | .38 Special | |
---|---|---|
Neck diameter | .379 in (9.6 mm) | 0.379 in (9.6mm) |
Base diameter | .379 in (9.6 mm) | 0.379 in (9.6mm) |
Designed | 1934 | 1898 |
Can .357 also shoot 38?
No; . 357 Magnum was specifically designed so it cannot be fired from handguns chambered in . 38 Special, but you can shoot .
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