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45-459: The Novator Kalibr (Калибр, caliber ), also referred to as 3M54-1 Kalibr , 3M14 Biryuza (Бирюза, turquoise ), ( NATO reporting name SS-N-27 Sizzler and SS-N-30A ) is a family of Russian cruise missiles developed by NPO Novator ( OKB-8 ). It first saw service in 1994. There are ship-launched, submarine-launched and air-launched versions of the missile, and variants for anti-ship , anti-submarine and land attack use. Some versions have

90-503: A rifled barrel, the distance is measured between opposing lands or between opposing grooves ; groove measurements are common in cartridge designations originating in the United States , while land measurements are more common elsewhere in the world. Measurements "across the grooves" are used for maximum precision because rifling and the specific caliber so measured is the result of final machining process which cuts grooves into

135-692: A " 30 caliber rifle", which could accommodate any of a wide range of cartridges using a roughly 0.30 inches (7.6 mm) projectile; or as a "22 rimfire", referring to any rimfire firearms firing cartridges with a 22 caliber projectile. However, there can be significant differences in nominal bullet and bore dimensions, and all cartridges so "categorized" are not automatically identical in actual caliber. For example, 303 British firearms and projectiles are often "categorized" as ".30-caliber" alongside several dozen U.S. "30-caliber" cartridges despite using bullets of .310–.312-inch (7.87–7.92 mm) diameter while all U.S. "30-caliber" centerfire rifle cartridges use

180-405: A .250 inch land diameter and .257 inch groove diameter. The .308 Winchester is measured across the grooves and uses a .308-in diameter (7.82-mm) bullet; the military-specification version is known as 7.62 × 51 mm NATO , so called because the bore diameter measured between the lands is 7.62 mm, and the cartridge has a case 51 mm long. Converting a rifle to fire a different cartridge in

225-423: A barrel diameter of roughly 0.45 inches (11.43mm). Barrel diameters can also be expressed using metric dimensions. For example, a "9 mm pistol" has a barrel diameter of about 9 millimeters. Since metric and US customary units do not convert evenly at this scale, metric conversions of caliber measured in decimal inches are typically approximations of the precise specifications in non-metric units, and vice versa. In

270-412: A common, standard .308-inch (7.82 mm) bullet outside diameter. Using bullets larger than design specifications causes excessive pressures, while undersize bullets cause low pressures, insufficient muzzle velocities and fouling that will eventually lead to excessive pressures. Makers of early cartridge arms had to invent methods of naming cartridges since no established convention existed then. One of

315-599: A conventional booster instead. The air launched version is held in a container that is dropped as the missile launches, detaching from the container. There are several claims about the maximum range of Kalibr land attack versions in use by Russia. The U.S. Department of Defense estimates its range at 1,400 km (870 mi), and Russian Defence Minister Sergei Shoigu put its range at "almost 1,500 km (930 mi)." Following its first operational firing in October 2015, Russian Ministry of Defence statements suggested

360-432: A distance of 26 mi (42 km). Smoothbore cannon and carronade bores are designated by the weight in imperial pounds of spherical solid iron shot of diameter to fit the bore. Standard sizes are 6, 12, 18, 24, 32, and 42 pounds, with some non-standard weights using the same scheme. See Carronade#Ordnance . From about the mid-17th until the mid-19th century, the measurement of the bore of large gunpowder weapons

405-598: A multiple of the bore diameter. 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. The British Royal Navy insisted on 50-cal guns on ships as it would allow 1,900 to 2,700 lb (860 to 1,220 kg) shells to travel at an initial velocity of up to 1,800 mph (2,897 km/h) to

450-486: A pound; therefore, its barrel is smaller than the 12-gauge. This metric is used in Russia as "caliber number": e.g., "shotgun of the 12 caliber." The 16th caliber is known as "lordly" ( Russian : барский ). While shotgun bores can be expressed in calibers (the .410 bore shotgun is measured as .410 in (10.4 mm) in diameter, unlike with rifles the actual bore diameter of a smoothbore shotgun varies significantly down

495-446: A range of 2,000 km (1,200 mi), while a December 2015 Office of Naval Intelligence report gathered a number of Russian statements projecting ranges between 1,500-2,500 km (1,600 mi). Discrepancies in range values may be political declarations for strategic effect, or potentially longer 2,500 km-range claims could be associated with a thermonuclear armed variant while shorter 1,500 km-range estimates are for

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540-432: A related expression. The gauge of a shotgun refers to how many lead spheres, each with a diameter equal to that of the bore, that amounts to one pound (454 g (1.0 lb)) in weight. In the case of a 12-gauge (18.5 mm) shotgun, it would take 12 spheres the size of the shotgun's bore to equal a pound. A numerically larger gauge indicates a smaller barrel: a 20-gauge (15.6 mm) shotgun requires more spheres to equal

585-567: A result, are so classified by NATO. Gremyashchiy -class corvettes are very large multipurpose vessels, designed to complement the Steregushchiy class already being commissioned with the Russian Navy . They have been designed to have an improved habitability for higher endurance missions, and are able to launch cruise missiles. The class was designed with German MTU diesels for propulsion. However, because of sanctions arising from

630-498: A second propulsion stage that initiates a supersonic sprint in the terminal approach to the target, reducing the time that air defense systems have to react, while subsonic versions have greater range than the supersonic variants. The missile can carry a warhead weighing up to 500 kilograms (1,100 lb) of explosive or a thermonuclear warhead . The missile is a modular system with five versions: two anti-shipping types, one for land attack and two anti-submarine types. The missile

675-519: A steel hull and composite superstructure, with a bulbous bow and nine watertight subdivisions . Compared with the Soobrazitelny , Boikiy , Sovershennyy and Stoikiy ships, which are fitted with Redut air defense VLS system of 12 launchers on the bow, these new ships are equipped with a UKSK VLS system comprising eight launchers for either Kalibr, Oniks or Zircon anti-ship/cruise missiles. The Redut VLS system with 16 launchers has been placed on

720-562: Is a modification of the Kalibr missile system. A Club-K variant, which is disguised as a shipping container that can be placed on a truck, train, or merchant vessel, was advertised in 2010 and was shown for the first time at the MAKS 2011 air show . Russian submarines of the Kilo class, Lada class, Amur class, Akula class, Yasen class, and Borei class are launch platforms for

765-726: Is an update of the Steregushchiy -class corvettes of the Russian Navy at a cost of 150 million $ . This follow-on project was designed by the Almaz Central Marine Design Bureau in Saint Petersburg . The first ship was laid down on 26 May 2011 and the official laying down ceremony took place on 1 February 2012. Although classified as corvettes by the Russian Navy, these ships carry sensors and weapon systems akin to frigates and, as

810-495: Is based. The following table lists some of the commonly used calibers where both metric and US customary units are used as equivalents. Due to variations in naming conventions, and the whims of the cartridge manufacturers, bullet diameters can vary widely from the diameter implied by the name. For example, a difference of 0.045 in (1.15 mm) occurs between the smallest and largest of the several cartridges designated as ".38 caliber". Shotguns are classed according to gauge,

855-400: Is designed to share common parts between the surface and submarine-launched variants but each missile consists of different components, for example, the booster. The missile can be launched from a surface ship using a vertical launching system (VLS). It has a booster with thrust vectoring capability. The missile launched from a submarine torpedo tube has no need for such an addition but has

900-419: Is much variance in the use of the term "small-bore", which over the years has changed considerably, with anything under 0.577 inches (14.7 mm) considered "small-bore" prior to the mid-19th century. While modern firearms are generally referred to by the name of the cartridge the gun is chambered for, they are still categorized together based on bore diameter. For example, a firearm might be described as

945-534: Is the specified nominal internal diameter of the gun barrel bore – regardless of how or where the bore is measured and whether the finished bore matches that specification. It is measured in inches or in millimeters . In the United States it is expressed in hundredths of an inch; in the United Kingdom in thousandths; and elsewhere in millimeters. For example, a US " 45 caliber " firearm has

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990-488: The Ukrainian conflict , deliveries of MTU diesels beyond the first two units were stopped, resulting in the cancellation of further units. Instead, new units of the preceding Steregushchiy class are being ordered. In May 2016, corvette Gremyashchiy received two Russian-made 1DDA-12000 diesel units from Kolomna Works , based on their 16D49 engines, replacing the previously required German MTU diesels. The lead vessel of

1035-559: The Club missile system. Kalibr cruise missiles have been widely used by Russian forces since the start of the 2022 Russian invasion of Ukraine on 24 February 2022. The opening assault is said to have included at least 30 cruise missiles, targeting command and control points, air bases, and air-defense batteries. The missiles were likely fired by the Buyan-class corvettes , Admiral Grigorovich-class frigates and Kilo-class submarines of

1080-518: The Kalibr-PL (export Club-S), designed for use from submarines, and the Kalibr-NK (export Club-N), designed for surface ships. These two launch platforms can be equipped with the following warhead and guidance combinations: Caliber In guns , particularly firearms , but not artillery, where a different definition may apply , caliber (or calibre ; sometimes abbreviated as " cal ")

1125-484: The Russian Black Sea Fleet . Ukraine's military command reported widespread usage of Kalibr cruise missiles in strikes against strategic and non-combat targets across Ukraine. Most notable incidents were: Domestic variants are basic versions of this missile family; these are the 3M54, 3M51 , 3M14 and 91R variants. The export model is called Club (formerly Klub). There are two major launch platforms:

1170-422: The bore diameter and the length of the cartridge case; for example, the 6.5×55mm Swedish cartridge has a bore diameter of 6.5 mm and a case length of 55 mm. The means of measuring a rifled bore varies, and may refer to the diameter of the lands or the grooves of the rifling. For example, the 257 Roberts and 250 Savage both use a .257 inch projectile; both 250 Savage and 257 Roberts rifle bores have

1215-545: The bullet weight in grains was designated, such as 45-70-405. This scheme was far more popular and was carried over after the advent of early smokeless powder cartridges such as the 30-30 Winchester and 22 Long . Later developments used terms to indicate relative power, such as .44 Special and .44 Magnum . Variations on these methods persist today, with new cartridges such as the 204 Ruger and 17 HMR (Hornady Magnum Rimfire). Metric diameters for small arms refer to cartridge dimensions and are expressed with an "×" between

1260-774: The class would be built at the Amur Shipyard for the Pacific Fleet with service entry envisaged between 2024 and 2028. In December 2021, Provorny suffered severe fire damage while under construction at the Severnaya Verf yard. A rebuild was reported as likely to take five years. In June 2024, Provorny was relaunched at the Northern Shipyard in St. Petersburg. Project 20385 differs from its predecessor by greater dimensions and displacement. They have

1305-418: The class, Gremyashchiy , went on sea trials in late April 2019. On 31 October 2019, Russian President Vladimir Putin announced Gremyashchiy will be equipped with the hypersonic 3M22 Zircon anti-ship cruise missiles. In December 2019, as part of its state acceptance trials, the ship entered White Sea to test its main missile system against various types of targets. An additional order of two corvettes

1350-455: The contemporary English ( avoirdupois ) pound massed of approximately 454 g (1.001 lb). Thus, a French 32-pounder at the Battle of Trafalgar threw a shot with 1.138 kg (2.51 lb) more mass than an English 32-pounder. Complicating matters further, muzzle-loaded weapons require a significant gap between the sides of the tube bore and the surface of the shot. This is necessary so

1395-416: The conventionally armed missile. Launch of production of a submarine-variant of the 3M14TE Kalibr-NK called the Kalibr-PL missile occurred in 2012, according to state television news (broadcast of 11.10.2015). Russia has improved the targeting system of its ship- and submarine-launched Kalibr cruise missiles to improve their ability to conduct time sensitive attacks. Defence Minister Sergei Shoigu revealed

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1440-562: The development, which was initiated as a result of combat experience in Syria, in an interview with the Moskovsky Komsomolets newspaper on 22 September 2019. ' Club-K' – a Russian container complex of missile weapons , placed in the standard 20- and 40-foot sea container . It is designed to defeat surface and ground targets. The complex can be mounted on shorelines , vessels of various classes, rail platforms and trucks . It

1485-544: The early established cartridge arms was the Spencer repeating rifle , which Union forces used in the American Civil War . It was named based on the chamber dimensions, rather than the bore diameter, with the earliest cartridge called the "No. 56 cartridge", indicating a chamber diameter of .56 in; the bore diameter varied considerably, from .52 to .54 in. Later various derivatives were created using

1530-432: The end of their barrel life, whereby the rifling is worn down to a point where a rifle loses some of its accuracy , the choice to make a caliber or cartridge change is often done at the same time as when a new rifle barrel is fitted to the rifle by a gunsmith . There are a few important factors to consider when converting a rifle to a different caliber or cartridge. The action of the rifle should be long enough to contain

1575-421: The length of the barrel, with the use of chokes and back-boring. In the United Kingdom, "gauge" is referred to as "bore" and in the United States "bore" is referred to as "gauge", e.g. a "12-bore shotgun or 12-gauge shotgun" has a bore or gauge that can accommodate a lead sphere weighing 1/12th of a pound. The term caliber is used as a measure of length of artillery barrels from muzzle to breech, expressed as

1620-546: The missiles. The Russian Gremyashchy class, Buyan-M class, the second batch of Steregushchy class corvettes and the Karakurt class are low displacement platforms with Kalibr system ability. The Russian Admiral Gorshkov class, Admiral Grigorovich class, and Gepard class frigates are able to carry these missiles. Also the Indian Talwar class frigate is another shipborne launch platform for

1665-455: The most common sizes encountered, although larger, smaller and intermediate sizes existed. In practice, though, significant variation occurred in the actual mass of the projectile for a given nominal shot weight. The country of manufacture is a significant consideration when determining bore diameters. For example, the French livre , until 1812, had a mass of 489.5 g (1.079 lb), whilst

1710-426: The new cartridge, the magazine should also be able to hold the new cartridge, the bolt face should be the correct diameter and the extractor the correct size to hold the head of the new cartridge. The most common of these caliber conversions on rifles, are usually done to change from a parent cartridge to a new cartridge based on it, like when converting a rifle to a 6.5 mm Creedmoor from a 308 Winchester on which it

1755-405: The projectile may be inserted from the mouth to the base of the tube and seated securely adjacent the propellant charge with relative ease. The gap, called windage , increases the size of the bore with respect to the diameter of the shot somewhere between 10% and 20% depending upon the year the tube was cast and the foundry responsible. The relationship between bore diameter and projectile weight

1800-402: The rough bore, leaving the "lands" behind. Good performance requires a concentric, straight bore that accurately centers the projectile within the barrel, in preference to a "tight" fit which can be achieved even with off-center, crooked bores that cause excessive friction, fouling and an out-of-balance, wobbling projectile in flight. Calibers fall into four general categories by size: There

1845-567: The same basic cartridge, but with smaller-diameter bullets; these were named by the cartridge diameter at the base and mouth. The original No. 56 became the .56-56, and the smaller versions, .56-52, .56-50, and .56-46. The 56–52, the most common of the new calibers, used a 50-cal bullet. Other black powder-era cartridges used naming schemes that appeared similar, but measured entirely different characteristics; 45-70 , 44-40 , and 32-20 were designated by bullet diameter to hundredths of an inch and standard black powder charge in grains . Optionally,

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1890-504: The same bore diameter, often involves merely re-chambering the barrel to the new cartridge dimensions, if the rim diameter of the new cartridge matches that of the old cartridge. Converting a rifle to fire a different cartridge in a different caliber and bore as what it initially was, means that the barrel of the rifle will also need to be changed. Because many competitive precision rifle shooters often shoot thousands of rounds per year both for practice and competitions, and they more often reach

1935-592: Was made in August 2020. Since the order for the Project 20385 vessels was made in conjunction with a larger order for additional Project 20380 ships, the new vessels could be built either at the Amur Shipyard , if destined for the Pacific Fleet, or alteratively at Severnaya Verf . As of November 2020, the allocation between shipyards had still to be decided. In December it was announced that four new corvettes of

1980-745: Was severed following the widespread adoption of rifled weapons during the latter part of the 19th century. Guns continued to be classed by projectile weight into the mid-20th century, particularly in British service with guns, such as the 2-pounder , 6-pounder , and 17-pounder anti-tank weapons . However, this value no longer definitively related to bore diameter, since projectiles were no longer simple spheres—and in any case were more often hollow shells filled with explosives rather than solid iron shot. Gremyashchy class corvette The Gremyashchiy class ( Russian : Гремящий , lit.   'Thunderous'), Russian designation Project 20385 ,

2025-444: Was usually expressed as the weight of its iron shot in pounds . Iron shot was used as the standard reference because iron was the most common material used for artillery ammunition during that period, and solid spherical shot the most common form encountered. Artillery was classified thereby into standard categories, with the 3-pounder, 4-pounder, 6-pounder, 8-pounder, 9-pounder, 12-pounder, 18-pounder, 24-pounder, and 32-pounder being

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