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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.
A "short course" shoots only at 25 yards and uses a reduced-size target for the Slow Fire segment. All courses of fire at an indoor competition are typically fired at 50 feet (15 m) with appropriately scaled targets. An example outdoor 900 match would include: 2 strings of slow fire. Each string consists of 10 shots at 50 yards at a NRA B6 target.
The basic unit of length in the imperial and U.S. customary systems is the yard, defined as exactly 0.9144 m by international treaty in 1959. [2] [10] Common imperial units and U.S. customary units of length include: [11] thou or mil (1 ⁄ 1000 of an inch) inch (25.4 mm) foot (12 inches, 0.3048 m) yard (3 feet, 0.9144 m)
[f] ^ For the SCM women's 200 free American Record, Allison Schmitt swam a faster time at the 2009 Duel in the Pool (1:51.67); however, the time has not been recognized as a record by USA Swimming. [g] ^ For the SCM women's 400 IM American Record , Julia Smit at the 2009 Duel in the Pool set a then-World Record of 4:21.04; however, this time ...
The chain (abbreviated ch) is a unit of length equal to 66 feet (22 yards), used in both the US customary and Imperial unit systems. It is subdivided into 100 links. [1] [2] There are 10 chains in a furlong, and 80 chains in one statute mile. [2] In metric terms, it is 20.1168 m long. [2]
A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens.
A common size for cells inside cordless tool battery packs. This size is also used in radio-controlled scale vehicle battery packs and some Soviet multimeters. 1 ⁄ 2-, 4 ⁄ 5 - and 5 ⁄ 4-sub-C sizes (differing in length) are also available. Soviet 332 type can be replaced with R10 (#4, 927, BF, U8) or 1.5 V elements from 3 V 2xLR10 packs ...
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