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The 6.5mm Grendel is an intermediate cartridge jointly designed by British-American armorer Bill Alexander, competitive shooter Arne Brennan (of Houston, Texas) and Lapua ballistician Janne Pohjoispää, as a low-recoil, high-precision rifle cartridge specifically for the AR-15 platform at medium/long range (200–800 yard).
An improved 6.5 PPC variation branded the 6.5 Grendel was marketed by Alexander Arms LLC. [9] Others are the 6.5 CSS marketed by CompetitionShooting.com, the 6.5 PPCX developed by Arne Brennan and optimized for 100–108 grains (6.48–7.00 g) 6.5mm bullets, and the 6.5 BPC developed by Jim Borden and Dr. Louis Palmisano and optimized for 81 ...
M19, is based on the well-tested Kalashnikov principle, chambered in the 6.5 mm Grendel or 7.62×39 mm cartridge. [2] The Zastava M19 is gas operated with a rotating bolt locking system. The reliability of functioning in different climatic and field conditions has been confirmed by strict testing methods in accordance with military standards.
The 2014 high NRA Nation Championship equipment survey lists the 6.5×47mm Lapua as second most popular caliber for both the high power rifle and high power hunter rifle competition. [14] The 6.5×47mm Lapua has set a new record in October 2017 for bench rest in the UK with a five shot group measuring 1.058" and on a blustery day at 600 yd (549 m).
The 6.5mm Creedmoor designated as 6.5 Creedmoor by SAAMI, and as 6,5 Creedmoor by the C.I.P. [ 4 ] is a centerfire rifle cartridge introduced by Hornady in 2007. [ 6 ] It was developed by Hornady senior ballistics scientist Dave Emary in partnership with Dennis DeMille, the vice-president of product development at Creedmoor Sports, hence the name.
There is little evidence as to the ordinary length of these spears, although estimates based on grave goods indicate that their length ranged from 1.6 to 2.8 metres (5 ft 3 in–9 ft 3 in). [16] The end of the spear was sometimes protected with an iron ferrule, forming a hollow (or, less commonly, solid) cone which fit over the shaft. [17]
The spear was in use for hunting as early as five million years ago in hominid and chimpanzee societies, and its usage may go back even further. [2] The spear gave the hunter the ability to kill large animals, at ranges as far as the hunter could throw the spear; the Roman pilum , for example, had a range of 30 metres (98 feet).
A spear (being a steel shaft slightly longer than the stock/barrel of from 6–10 millimetres (0.2–0.4 in) in diameter, which lies on top of the barrel or in a track or groove on the top), and a trigger mechanism to engage the spear (usually in or near a handle or grip at or near the rear) to keep the gun in a loaded state of readiness when ...