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Predator: varmint/target model with an 18 in (.308 Win only) or 22 in (560 mm) threaded alloy steel (stainless option available for 6.5 Creedmoor) Medium Palma barrel, with an overall length of 38 in (970 mm) or 42 in (1,100 mm), and comes with factory Weaver rail installed.
Two years later, in 1965, Remington Arms adopted the .22-250, added "Remington" to the name and chambered their Model 700 and 40 XB match rifles for the cartridge along with a line of commercial ammunition, thus establishing its commercial specification. [6] The .22-250 was the first non-Weatherby caliber offered in the unique Weatherby Mark V ...
A rifle is a firearm designed to be fired from the shoulder, with a barrel that has a helical groove or pattern of grooves ("rifling") cut into the barrel walls.The raised areas of the rifling are called "lands," which make contact with the projectile (for small arms usage, called a bullet), imparting spin around an axis corresponding to the orientation of the weapon.
Ruger American.204 Ruger.22LR.223 Remington.243 Winchester.270 Winchester.308 Winchester.300 Winchester Magnum.338 Winchester Magnum. 5.56×45mm NATO.30-06 Springfield. 7.62×39mm. 2011 United States: Ruger M77.220 Swift.22-250 Remington.243 Winchester.25-06 Remington.257 Roberts.264 Winchester Magnum.270 Winchester.284 Winchester.280 Remington
Early production rifles had a 1:12 twist rate and post-2014 rifles have the 1:9 twist rate. [3] The CZ 527 Varmint in .223 has muzzle velocities for standard-load 45-grain (2.9 g) ammunition of around 3,500 feet per second (1,100 m/s). The 1:9 barrel twist in the Varmint Kevlar reduces muzzle velocities by about 1.5%.
The .257 Roberts, also known as .257 Bob, [2] is a medium-powered .25 caliber rifle cartridge.It has been described as the best compromise between the low recoil and flat trajectory of smaller calibers such as the 5 mm (.22 in) and 6 mm (.24 in), and has more energy, but is harder recoiling, similar to larger hunting calibers, such as the 7 mm (.28 in) and 7.62 mm (.30 in).
The Ruger No. 1 is a single-shot rifle with a Farquharson-style hammerless falling-block action, introduced and manufactured by Sturm, Ruger & Co. since 1967. [4] An underlever lowers the breechblock to allow ammunition loading and also cocks the rifle.
SAAMI recommends a six groove barrel with a rate of twist of one revolution in 9 in (230 mm), a bore diameter of .256 in (6.5 mm) and a groove diameter of .264 in (6.7 mm) with each groove having a width of 0.090 in (2.3 mm). The recommended maximum pressure for the cartridge (piezo) is 64,000 psi (4,400 bar).