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7 mm» This is a list of firearm cartridges which have bullets of a caliber between 6 millimetres (0.236 in) and 6.99 millimetres (0.275 in). Length refers to the cartridge case length
2 cm – approximate width of an adult human finger; 2.54 cm – 1 inch; 3.08568 cm – 1 attoparsec; 3.4 cm – length of a quail egg [113] 3.5 cm – width of film commonly used in motion pictures and still photography; 3.78 cm – amount of distance the Moon moves away from Earth each year [114] 4.3 cm – minimum diameter of a golf ball [115]
The cartridge uses a 6.5 Grendel case that has been necked-down to accept a 6.2 mm (.243 in) bullet. [citation needed] The 6mm AR takes advantage of the wide variety of 6.2 mm (.243 in) caliber bullets. Slim, long bullets with high ballistic coefficient are ideal for energy retention at long ranges.
An Olympic-size swimming pool holds over 2 acre-feet of water For larger volumes of liquid, one measure commonly used in the media in many countries is the Olympic-size swimming pool. [47] A 50 m × 25 m (164 ft × 82 ft) Olympic swimming pool, built to the FR3 minimum depth of 2 metres (6.6 ft) would hold 2,500 m 3 (660,000 US gal).
The cartridge maximum overall length is nominally given as 2.230-inch (56.6 mm), however, as the cartridge is a wildcat cartridge chamber dimensions may vary from manufacturer to manufacturer. For this reason overall length of the cartridge may vary.
Centimeters (cm) are avoided as they cause confusion when reading plans. For example, the length two and a half meters is usually recorded as 2500 mm or 2.5 m; it would be considered non-standard to record this length as 250 cm. [7] [8]
2.54 centimeters (1 inch is exactly 2.54 cm) ... 1 inch was equal to 3 ... is said to have defined the Scottish inch as the width of an average man's thumb at the ...
Here, the base units are the quad, equal to 10 7 m (approximately a quadrant of the Earth's circumference), the eleventhgram, equal to 10 −11 g, and the second. These were chosen so that the corresponding electrical units of potential difference, current and resistance had a convenient magnitude. [36]: 268 [37]: 17