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The 6.5×58mm Vergueiro is a centerfire rimless cartridge designed in 1904 specifically for the Mauser-Vergueiro, chosen as service rifle of the Portuguese Army.It was adopted to replace the rimmed 8×60mmR Guedes and 8×56mmR Kropatschek Corto cartridges originally filled with blackpowder, which had been used with Kropatschek rifles procured in the mid-1880s.
The no-frills Model 58 also lacked an ejection rod shroud, but retained the pinned barrel and counter bored cylinder of the more expensive Model 57. The Model 58 was manufactured from 1964 to 1977 and roughly 20,000 were produced. In 2008, it was released again by S&W, both in bright nickel and bright blue finish. [3]
With the exceptions of 1, 8 and 144 (F 1 = F 2, F 6 and F 12) every Fibonacci number has a prime factor that is not a factor of any smaller Fibonacci number (Carmichael's theorem). [57] As a result, 8 and 144 (F 6 and F 12) are the only Fibonacci numbers that are the product of other Fibonacci numbers. [58]
58 is equal to the sum of the first seven consecutive prime numbers: [5] + + + + + + = This is a difference of 1 from the seventeenth prime number and seventh super-prime, 59. [6] [7] 58 has an aliquot sum of 32 [8] within an aliquot sequence of two composite numbers (58, 32, 13, 1, 0) in the 13-aliquot tree. [9]
6/4: 0.6 m (2.0 ft) 58: 64.5×47.5 mm (2.5×1.9 in) 305 g (10.8 oz) [a] 58 R 58mm f/1.2: f /1.2–16: Feb 1962: 7/5: 0.6 m (2.0 ft) 58: 64.5×52.8 mm (2.5×2.1 in) 432 g (15.2 oz) [a] Telephoto lenses: 85 R 85mm f/1.9: f /1.9–22: Jan 1960: 6/4: 1 m (3.3 ft) 58: 63×74.5 mm (2.5×2.9 in) 355 g (12.5 oz) [b] R 85mm f/1.8: f /1.8–16: Oct 1961: ...
The 58th Infantry Regiment is a regiment of the United States Army first established in 1917.. The regiment was organized in 1917 from the Fourth Infantry as shown on the distinctive unit insignia; the field is blue for Infantry; the regiment served in France in the Fourth Division, shown by the ivy leaves from the shoulder sleeve insignia; the torpedo commemorates the first losses of the ...
The 6.5×57mm Mauser was designed and introduced by Mauser in either 1893 or 1894 for use as a sporting cartridge, created by necking down the 7×57mm Mauser. [2] Due to high recognition of 7.92 mm Patrone 88, the presumed parent to the 7×57mm, it was marketed as M88/57/6.5 mit und ohne Rand in 1920s.