Seven millimeters is just about .28 inches, bigger than a .22, smaller than a .30 caliber. The actual bullet diameter will vary a thousandth or two, to allow for the rifling in the weapon.The 7mm bullet measures .284 in.If you were to want to shoot cast bullets in a 7mm rifle the size needed will be .285-.286in.for best accuracy.
.284
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.
11.5 mm bullet diameter
Here are the specifications for the .270 Winchester cartridge: Specifications Parent case .30-06Bullet diameter .277 in (7.0 mm)Neck diameter .278 in (7.1 mm)Shoulder diameter .441 in (11.2 mm)Base diameter .470 in (11.9 mm)Rim diameter .473 in (12.0 mm)Case length 2.540 in (64.5 mm)Overall length 3.340 in (84.8 mm)Rifling twist 1-10Primer type Large rifle Ballistic performance Bullet weight/type Velocity Energy90 gr (5.8 g) HP 3,603 ft/s (1,098 m/s) 2,595 ft·lbf (3,518 J)130 gr (8.4 g) SP 3,085 ft/s (940 m/s) 2,748 ft·lbf (3,726 J)140 gr (9.1 g) SP 2,916 ft/s (889 m/s) 2,644 ft·lbf (3,585 J)150 gr (9.7 g) SP 2,850 ft/s (870 m/s) 2,706 ft·lbf (3,669 J) Source: Hodgdon Powder
The diamater of a 9mm parabellum bullet is 9.03 millimeters, or .356 of an inch.
As far as diameter, there is very little difference. A .357 is .358 in diameter and a 9mm is .356 in diameter.
I think you mean .32 caliber, not mm. It means that the gun fires a bullet that is about 32/100ths of an inch in diameter. A 9mm fires a bullet 9mm in diameter- or about .35 inches in diameter. A 32 mm bullet would be about the size of big (D cell) flashlight battery!
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
A bullet with a diameter of approximately 9mm. Not all 9mm projectiles are exactly 9mm in diameter - the 9x19 Parabellum/Luger has a diameter of 9mm, while the 9x18 Makarov has a diameter of 9.27mm, the 9x23 Steyr has a diameter of 9.03mm, etc.
According to Red Book specifications, a standard CD is 120 mm (4.75 inches) in diameter and 1.2 mm (0.05 inches) thick
The caliber of the bullet is 7,62 mm. And shoots the 7.62x54r ammo. That makes it a .30 cal.
Yes they is a differnent. When people say "38" they usually mean .38 special, which is a revolver cartridge. .380 ACP is a semi-automatic cartridge. The bullet in a .380 cartridge, even though it's called .380, is actually very slightly smaller in diameter, and lighter than the bullet in a .38 cartridge. The .38 bullet is 0.357 inches in diameter while the .380 is 0.350 inches in diameter. Technically, the .380 cartridge is considered part of the 9 mm class of bullets. [9 mm x 19 mm = 9 mm Luger or 9 mm Parabellum, 9 mm x 18 mm = 9 mm Tokarov, and 9 mm x 17 mm = .380 ACP]