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Barrel length helps determine a specific cartridge's muzzle velocity. A longer barrel typically yields a greater muzzle velocity, while a shorter barrel yields a lower one. The first AR-15 rifles used a barrel length of 20". In the case of the 223 Remington (M193), ammunition loses or gains about 25.7 ft/sec (7.8 m/s) for each inch of barrel ...
The major dimensional difference between the chambers that fire the .223 Remington and the 5.56×45mm NATO is the longer and larger-diameter "freebore" [3] in the 5.56 chamber (0.0566 in (1.44 mm) vs 0.0250 in (0.64 mm) length, 0.2265 in (5.75 mm) vs 0.2240 in (5.69 mm) diameter). Freebore is a short and smooth section of the barrel that is ...
The .223 WSSM was introduced in 2003 by the Browning Arms Company, Winchester Ammunition, and Winchester Repeating Arms Company. The .223 designation is a reference to the popular .223 Remington. It is currently the fastest production .22 caliber round in the world with muzzle velocities as high as 4,600 feet per second (1,402 meters per second).
Barrel length: 20–28 in (51–71 cm) ... .223 Remington.223 WSSM ... Particular models feature a one-piece aluminum pillar block bedding for greater accuracy, ...
Overall length Barrel length Weight Stock (with studs) Sights 10FP .308 Win..223 Rem. 1,000 or 1,100 mm (40 or 44 in) 510 or 610 mm (20 or 24 in) 3,900 g (8.5 lb) Black synthetic Drilled and tapped for scope 10FLP Left-handed .308 Win..223 Rem. 1,100 mm (44 in) 610 mm (24 in) 3,900 g (8.5 lb) Black synthetic Drilled and tapped for scope
Barrel length: 20-26 inches (508-660 mm) Cartridge: Various: ... This feature is a significant factor contributing to the accuracy of the rifle. ... .223 Remington ...
Once all the cartridges had been tested at 18" and the barrels were cut and ready, each brand was tested again at 17" and so on, right down to a 2" barrel. Three rounds of each brand of ammunition were fired at each barrel length and the velocity of the bullet was recorded as it passed over two commercial chronographs 15 feet away.
The cartridge's inherent accuracy was a carry over from the .222 Remington which ... .223 Remington 55 ... The cartridge maximum overall length is nominally given as ...