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The 6.5×47mm Lapua (designated as the 6,5 × 47 Lapua by the C.I.P.) [1] is a smokeless powder rimless bottlenecked rifle cartridge that was developed specifically for 300–1,000 m (328–1,094 yd) competition shooting by ammunition maker Nammo Lapua and the Swiss rifle manufacturer Grünig & Elmiger AG in 2005. [2]
On the left is a Lapua FMJ 144gr bullet and on the right is a Hornady 123gr A-Max. These are loaded to an COAL of 2.71in and even when loaded out that long they still have plenty of room to fit in the magazine of a standard short action rifle.
5.6×39mm.300 Lapua Magnum.338 Lapua Magnum This page was last edited on 8 October 2020, at 00:25 (UTC). Text is available under the Creative Commons Attribution ...
6.5mm Creedmoor, 6.5×48 mm, introduced in 2007 6.5×47mm Lapua , a 2005 cartridge that fires the same diameter and weight 9.0g bullet as the 6.5×54mm but achieves a faster muzzle velocity 6.5×53mmR , the rimmed Romanian and Dutch service rifle cartridge from the 1890s through World War II
The 6.5mm Creedmoor is known for its exceptional accuracy and long-range performance. According to Gunners' Review, this ammunition is often regarded as a secret weapon for precision shooters due to its impressive ballistic properties. [11] The 6.5mm Creedmoor is a medium-power cartridge comparable to the .260 Remington [12] and 6.5×47mm Lapua ...
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).
The exterior shape of the Lapua Magnum case was designed to promote reliable case feeding and extraction in bolt-action rifles and machineguns alike, under extreme conditions. 7.62mm UKM maximum C.I.P. cartridge dimensions. All sizes in millimeters (mm). Americans would define the shoulder angle at alpha/2 ≈ 20 degrees.
Changing the shoulder angle. By making the shoulder closer to square, the resulting space is closer to the ideal spherical shape, resulting in a more efficient burn. If the shoulder is also to be moved back, this is a cold forming operation; if the shoulder is to stay or be moved forward, it is a hot forming operation. Reducing the case taper.