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Long range sniper-style rifle matches at various ranges from unconventional shooting positions became popular in the 1990s.PRS rules established in 2012 stipulated rifles used by competing shooters must fire bullets with a diameter not greater than 7.82 millimetres (0.308 in) at muzzle velocities not greater than 980 m/s (3,200 ft/s).
The participants are divided into separate divisions based on the type of equipment used. It is common to use scopes with adjustable magnification, and cartdidges with calibers between 6 mm and 6.5 mm (for example 6 mm Dasher, 6.5 mm Creedmoor or 6.5×55 mm) because these tend to provide good ballistics at typical match distances and relatively little recoil.
In shooting sports, revolvers and semi-automatic pistols are the most commonly used. A rifle is a long gun with a rifled barrel, and requires the use of both hands to hold and brace against the shoulder via a stock in order to shoot steadily. They generally have a longer range and greater accuracy than handguns, and are popular for hunting.
Major precision rifle variants used by snipers from around the world are as follows. The list includes hunting or precision rifles equipped with a telescopic optic, and precision rifles used by both military and law enforcement trained snipers and marksmen.
The 6.5×47mm Lapua was the most popular cartridge during the PRS competition in 2015 beating out competing cartridges by more than two thirds. [11] C.I.P. rules the 6.5×47mm Lapua and 6.5mm Creedmoor both at up to 435.00 MPa (63,091 psi) P max piezo pressure and the .260 Remington lower at up to 415.00 MPa (60,191 psi) P max piezo pressure.
The scope base is the attachment interface on the rifle's receiver, onto which the scope rings or scope mount are fixed. Early telescopic sights almost all have the rings that are fastened directly into tapped screw holes on the receiver, hence having no additional scope base other than the receiver top itself.
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Leupold and Stevens Mark 6 scope with variable magnification 3-18x44mm, mounted on a M24 SWS. IDF M24 SWS with Leupold Mark 6 3-18x44mm sniper scope. Leupold FX-II Ultralight scope on a Ruger 77/44. The company's riflescopes are used by organizations such as the United States Army, the Secret Service and the Navy SEALs. [13]