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The Valmet Sniper M86 was used as a basis for the Sako TRG sniper rifle line. Even though the TRG-21 obtained its origins from the successful Sako TR-6 target rifle and 1984–1986 development work for the hardly produced Valmet Sniper M86 rifle by the former Finnish state firearms company Valmet which merged with Sako, the 4.7 kg (10 lb 6 oz) TRG-21 was designed as a result of a thorough ...
The 6.5-284 has been used extensively in benchrest competitions and is known as an extremely accurate long range round. Using an improved version of the 6.5-284, Rich DeSimone set a 1,000-yard (914.4 m) world record with a 1.564-inch (39.73 mm) group. [4]
The new cartridge was loaded with a 9.1 grams (140 gr) boat-tail spitzer bullet (D-projectile) fired at a muzzle velocity of 800 m/s (2,625 ft/s) with 2,912 J (2,148 ft⋅lbf) muzzle energy from a 739 mm (29.1 in) long barrel. [30] The new spitzer cartridge was adopted from around 1941 onwards.
Furthermore, the Su-25SM3 has been upgraded with the new PrNK-25SM-1 Bars targeting-and-navigation system and the KSS-25 communication system with Banker-8-TM-1 antenna. [150] As a result from combat experience in Syria the Su-25SM3 has been equipped with SVP-24 navigation and bombing aids that improve the accuracy of unguided bombs. [151]
The ZU-23-2 was developed in the late 1950s. It was designed to engage low-flying targets at a range of 2.5 km as well as armoured vehicles at a range of two kilometres and for direct defence of troops and strategic locations against air assault usually conducted by helicopters and low-flying airplanes. [7]