- published: 30 Jan 2015
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In guns including firearms, caliber or calibre is the approximate internal diameter of the barrel in relation to the diameter of the projectile used in it.
In a rifled barrel, the distance is measured between opposing lands or grooves; groove measurements are common in cartridge designations originating in the United States, while land measurements are more common elsewhere. It is important to performance that a bullet should closely match the groove diameter of a barrel to ensure a good seal. When the barrel diameter is given in inches, the abbreviation "cal" is used in place of "inches." For example, a small bore rifle with a diameter of 0.22 inch is a .22 cal; however, the decimal point is generally dropped when spoken, making it "twenty-two caliber" or a "two-two caliber". Calibers of firearms can be referred to in millimeters, as in a "caliber of eighty-eight millimeters" (88 mm) or "a hundred and five-millimeter caliber gun" (often abbreviated as "105 mm gun").
While modern cartridges and cartridge firearms are generally referred to by the cartridge name, they are still lumped together based on bore diameter. For example, a firearm might be described as a ".30 caliber rifle", which could be any of a wide range of cartridges using a roughly .30 inch projectile; or a ".22 rimfire", referring to any rimfire cartridge using a .22 caliber projectile.
Lincoln Barrett, better known by the stage name High Contrast (born 18 September 1979, Penarth, Cardiff), is a Welsh drum and bass DJ and producer.
Barrett grew up more interested in films and film soundtracks rather than music, and still cites Wendy Carlos's A Clockwork Orange soundtrack album and the Vangelis soundtrack for Blade Runner as defining musical influences. Whilst studying film making in Newport, he heard J Majik's Arabian Nights which turned the then 17-year-old Barrett on to drum and bass music. Barrett used to work in Cardiff's only electronic record shop, Catapult. A short time after he began to make music, he was given a DJ residency at Cardiff's drum and bass night, named Silent Running. During his residency at Silent Running, Barrett played alongside artists such as Grooverider and London Elektricity.
In June 2002, Barrett's debut album, True Colours, was released on Hospital Records, with "Return of Forever" and "Global Love" finding their way into the UK Singles Chart. His second album was High Society.