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The length of the barrel (especially for larger guns) is often quoted in multiples of the caliber, used, for example, in US naval rifles 3 in (76 mm) or larger. [2] The effective length of the barrel (from breech to muzzle) is divided by the barrel diameter to give a dimensionless quantity.
For example, a 4-inch gun of 50 calibers would have a barrel 4 in × 50 = 200 in long (written as 4" L/50 or 4"/50). A 16-inch gun of 50 calibers (16" L/50) has a barrel length of 50 × 16 = 800 inches (66 ft 8 in). Both 14-in and 16-in navy guns were common in World War II.
Common rifle cartridges, from the largest .50 BMG to the smallest .22 Long Rifle with a $1 United States dollar bill in the background as a reference point.. This is a table of selected pistol/submachine gun and rifle/machine gun cartridges by common name.
The FN 5.7×28mm (designated as the 5.7×28 by the C.I.P. [7] and FN 5.7×28mm NATO [9]) is a small-caliber, high-velocity, smokeless-powder, rebated, non-tapered, bottleneck, centerfire cartridge designed for pistols and personal defense weapons (PDW) uses, manufactured by FN Herstal. [10] It is similar in length to the .22 WMR and .22 Hornet ...
11 mm caliber#Revolver cartridges.452 11.5 ... Ballistics By The Inch testing of handgun cartridges and relationship between barrel length and velocity. This ...
The XP-100 went through a number of changes during its production run, and many variations were only available through the Remington Custom shop. The most significant changes in the later versions were to barrel length, which went to 14 + 1 ⁄ 2 in (370 mm), and the grip location, which was moved to the rear of the stock. Stocks with a rear ...
XB18: 5.56×45mm rifle with a 18.5 in (470 mm) barrel and a 28.125 in (714.4 mm) overall length. XB18RS: 5.56×45mm rifle with an 18.5 in (470 mm) barrel and a 30.5 in (770 mm) overall length; integrated permanent muzzle brake and a 10-round magazine to be compliant with laws of certain states. ("RS" stands for Restricted State.)
The C.I.P. lists the projectile diameter as 7.83 mm (.311–.312 caliber), which is the same bullet diameter as the British .303 British cartridges and Soviet ".30 caliber" rounds like 7.62×39mm. .308 Winchester(7.62 mm)-size bullets are safe and usable but would not necessarily be the most accurate. Reloading in this chambering is a nuisance ...