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The Whisper family was developed as a line of accurate, multi-purpose cartridges using relatively heavy rifle bullets for a given caliber in subsonic loads. [1] [2] [3] The intention was to create an extremely accurate cartridge family for military, police, competition and specialized hunting markets that could also be easily sound suppressed.
.308 Winchester/ 7.62×51mm is limited to a maximum bullet weight of 156 grains (ca. 10 grams), which can be seen as a little bit on the light side for the .308 calibre in long range shooting. .223 Rem/ 5.56×45mm is limited to a maximum bullet weight of 91 grains (ca 5.8 grams), which can be seen as a little on the heavy side for the calibre ...
The .308 Winchester has a 3.64 mL (56 gr H 2 O) cartridge case capacity. [9] The exterior shape of the case was designed to promote reliable case feeding and extraction in bolt-action rifles and machine guns alike, under extreme conditions. .308 Winchester maximum C.I.P. cartridge dimensions. All dimensions in millimeters (mm) and inches.
Common rifle cartridges, from the largest .50 BMG to the smallest .22 Long Rifle with a $1 United States dollar bill in the background as a reference point.. This is a table of selected pistol/submachine gun and rifle/machine gun cartridges by common name.
The .223 Remington (designated 223 Remington by SAAMI [4] and 223 Rem. by the C.I.P. [5]) is a rimless, bottlenecked, centerfire intermediate cartridge.It was developed in 1957 by Remington Arms and Fairchild Industries for the U.S. Continental Army Command of the United States Army as part of a project to create a small-caliber, high-velocity firearm.
The shoulder is reformed, length is trimmed, neck is sized to .308. This caliber is very popular, and examples are available in a wide variety of styles. Bullet weights can currently be found between 100gr to 220gr 7.62x40 Wilson Tactical (300 HAM'R), Uses 5.56 NATO cases (also .223). Shoulder is re-formed, length is trimmed, neck is sized to .308.
Starting with a .450 Bushmaster case, Remington trimmed the length to 1.525 in from the original 1.7 and necked it down to accept a conical .308 in diameter bullet with a 25-degree shoulder. [ 4 ] The rim size is .492 in and because the round generates 55,000 psi, Remington opted to use a .308 rifle bolt in a 5.56-sized rifle for increased case ...
First manufactured 7.62×39mm Soviet rounds in 2002, NATO-standard 5.56×45mm NATO and 7.62×51mm NATO rounds in 2005 (earning the NATO interchangeability rating in 2006), and sporting .223 Remington and .308 Winchester rounds in 2012. The headstamp has the caliber at 12 o'clock, manufacturer's code at 6 o'clock, 2-digit year of production at 3 ...