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The 6.8mm Remington Special Purpose Cartridge (6.8 SPC, 6.8 SPC II or 6.8×43mm) is a rimless bottlenecked intermediate rifle cartridge that was developed by Remington Arms in collaboration with members of the U.S. Army Marksmanship Unit and United States Special Operations Command [6] to possibly replace the 5.56 NATO cartridge in short barreled rifles (SBR) and carbines.
The rimless cartridge has a base diameter of 11.82 mm (similar to the 7.62×51mm NATO) and a case length of 47.72 mm. [2] The bullet is an unusual 6.65 mm diameter (6.45mm refers to the bore diameter), fractionally smaller than the common 6.5 mm (bore diameter) bullet. The 97 gr (6.3 g) bullet was fired at a muzzle velocity of 900 m/s (3,000 ft ...
Rifles chambered for the 7.65×53mm Argentine must be capable of handling long-action length (≤ 3.34 in (84.84 mm) overall length) cartridges. The American .308 Winchester cartridge is a close ballistic twin of the 7.65×53mm Argentine. The .308 Winchester being a post World War II cartridge developed by Winchester provides similar ...
A program could be saved to mylar-based magnetically coated cards measuring 71 mm × 9.5 mm (2.8 in × 0.4 in), which were fed through the reader by a small electric motor through a worm gear and rubber roller at a speed of 6 cm/s (2.4 in/s). [3] The recording area used only half of the width of the card.
height: 0.7–1.4 inches (18–36 mm) The HP-67 is a magnetic card-programmable handheld calculator , introduced by Hewlett-Packard in 1976 at an MSRP of $450. [ 1 ] A desktop version with built-in thermal printer was sold as the HP-97 at a price of $750. [ 2 ]
The widespread availability of standard size Mauser 98 rifles and the fact that the .375 H&H Magnum cartridge and its necked down version the .300 H&H Magnum with approximately 72 mm (2.83 in) case length were too long to fit in standard sized Mauser 98 bolt-action rifles makes the shorter 8×68mm S, 6.5×68mm and .375 Hölderlin interesting ...
As is customary in European cartridges the 8 denotes the 8 mm bullet caliber and the 64 denotes the 64 mm (2.52 in) case length. The 8×64mm is a hunting cartridge in central Europe and can due to its 87.5 mm (3.445 in) maximal overall length fairly easily be chambered in standard sized military Mauser Gewehr 98 bolt-action rifles.
Following the patent and release of Harold's Long Scale calculator featuring two knobs on the outside rim in 1914, he designed the Magnum Long Scale calculator in 1927. [ 6 ] [ 7 ] As the name "Magnum" implies, it was a fairly large device at 4.5 inches in diameter—about 1.5 inches more than Fowler's average non-Magnum-series calculators. [ 8 ]