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Developed as an intermediate cartridge between 223 and 308 with superior external ballistics in a smaller package. 6.5mm Creedmoor: 2012 [8] US [8] 12 [23] R [4] 6.72×48.77mm [8] 3050 [4] 2493 [4] 1.635 47.0 [10] 0.264 [10] 0.585 [5] 48.77mm Uses the same bolt and magazines as 308 rifles, with higher velocity, accuracy, and lower recoil. 6.5× ...
The .475 Wildey Magnum was designed to be a hunting round. Cases are formed from .284 Winchester brass with the neck cut down and widened to take a .475-inch bullet, and the length is the same as the .45 Winchester Magnum.
.223 Remington 5.56×45mm NATO.223 Wylde.308 Win 7.62×51mm NATO United States 2014 Desert Tech MDRx: Desert Tech.223 Remington 5.56×45mm NATO.223 Wylde.300 BLK.308 Win 7.62×51mm NATO 6.5mm Creedmoor.350 Legend.450 Bushmaster United States 2020 Desert Tech HTI: Desert Tech.375 Cheyenne Tactical.408 Cheyenne Tactical.416 Barrett.50 BMG United ...
The AR-15 is nominally chambered in .223 Remington or 5.56×45mm NATO, with the .223 Wylde chamber allowing for the safe chambering of both, but many variants have been produced in different calibers such as .22 LR (sometimes referred to as an AR-22 [59]), 7.62×39mm, 9×19mm Parabellum, [60] 6.5mm Grendel, and shotgun calibers. [61]
(Round balls lose velocity faster than conical bullets and have much steeper ballistic trajectories beyond about 75 yards or 69 metres) In contrast, a 4-bore express rifle often used a 1,500-grain (3.43 oz; 97.20 g) bullet wrapped in paper to keep lead buildup to a minimum in the barrel. In either case, assuming a 4-ounce (110 g) mass for a 4 ...
Government-specified barrel profile increased to between 0.675 and 0.575 inches; A2: Also referred to as the "government" or "gov't" profile. Barrel profile for which the portion of the barrel in front of handguards is thickened to 0.715 inches; HBAR: A barrel that in some portion is thicker than government-profile, usually underneath the ...
The ballistics of the .38-40 are close to those of the .40 S&W. [19].221 Fireball. This cartridge was developed by Remington Arms for the XP-100 pistol, which was a single shot bolt action pistol. The .221 Fireball was a necked back .222 Remington, designed for greater efficiency in the 10 in (25 cm) barrel of the XP-100. Even loaded with a ...
An 18-inch (457 mm) (MOD 0/1) or 16-inch (406 mm) (MOD H) threaded-muzzle match-grade free floating stainless steel heavy barrel with a 1:7 (178 mm) rifling twist ratio is standard for the SPR. [11] [3] [13] The barrels are manufactured by Douglas Barrels with a unique contour that reduced weight but maintained rigidity for accuracy. [14]