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The DSR-1 Subsonic is a variant optimized for 7.62×51mm NATO/.308 Winchester subsonic ammunition usage. The barrel length is reduced to 310 mm. The barrel length is reduced to 310 mm. The 8 inch twist rate of the barrel is especially adapted to stabilize the long heavy projectiles used in subsonic ammunition.
Subsonic loads for 9×19mm Parabellum commonly use 9.5 g (147 gr) bullets at velocities of 300 m/s (980 ft/s). For these ammunition loads, balancing bullet weight and velocity are required to ensure that the ammunition will still reliably cycle semi-automatic firearms. Subsonic ammunition with normal bullet weights often fails to function ...
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.
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.
Although, the solid .308 bullets that are lighter than 150 gr do not have optimum ballistic coefficients (hollow-point bullets can have an optimum profile at a slightly lower weight than 150 gr). Any cartridge candidates for the AR-15 family of rifles must be limited to a cartridge over all length (COAL) of 2.260 inches, in order to fit in the ...
The .308×1.5" Barnes was intended as a short range deer cartridge that could also be used as a varmint and predator cartridge. Loaded with the 150 gr (9.7 g) cartridge, it is capable of taking deer-sized game out to 150 yd (140 m). For predator and varmint hunting, bullets weighing 90–125 gr (5.8–8.1 g) are commonly used.
Although it is somewhat shorter than the .308, the .30 TC fires a 150-grain SST bullet nearly 200 fps faster. The .30 TC also propels the 150-grain SST faster than the 2.494" .30-06. When loaded with the 165-grain SST bullets, the .30 TC has a 50 fps advantage over the .30-06, which has a velocity of 2,850 fps.
From 8 mm caliber upwards the rise of sectional density and penetrating capability of practical spin-stabilized rifle bullets (bullets up to 5 to 5.5 calibers in length) tends to flatten out. [7] This means that, loaded with light, short and soft-nosed 8 mm bullets, the 8mm Remington Magnum can be used on remarkably small game.