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The ballistics of the .950 JDJ are more similar to that of the 20 mm autocannon round, which delivers approximately 39,500 foot-pounds force (53,600 joules). The muzzle energy of the .950 JDJ is comparable to the kinetic energy of a 2,800 pounds (1,300 kilograms) automobile traveling at 20 miles per hour (32 kilometres per hour).
A punt gun is a type of extremely large shotgun used in the 19th and early 20th centuries for shooting large numbers of waterfowl for commercial harvesting operations. These weapons are characteristically too large for an individual to fire from the shoulder or often carry alone, but unlike artillery pieces, punt guns are able to be aimed and fired by a single person from a mount.
The round was the first in Great Britain (and the first major in the world [2]) to have a rebated rim, one that is smaller in diameter than the case body, an invention which Taylor patented in 1908. [3] This allowed it to be used in converted G98 rifles with standard bolt faces and not have them weakened by widening. [4]
The .577 Nitro Express is a large-bore centerfire rifle cartridge designed for the purpose of hunting large game such as elephant. This cartridge is used almost exclusively in single-shot and double express rifles for hunting in the Tropics or hot climates in general and is a cartridge associated with the golden age of African safaris and Indian shikars.
The term "Express" was coined by James Purdey in 1856, derived from the express train, to publicise the bullet velocity of his double rifles and became common parlance for many rifle cartridges. The addition of the word "Nitro" stemmed from the propellant used in these cartridges, cordite , which is composed of nitrocellulose and nitroglycerine .
The .500 Nitro Express / 13x76mmR is a rifle cartridge designed for hunting large and dangerous game animals in Africa and India. [1] This cartridge was primarily designed for use in double rifles though various single shots were produced on the Farquarson action and at least one major company (Heym) produced it in bolt-action configuration.
It remains a very popular sporting round, with ammunition produced by all major manufacturers. It has a 68.2 grains (4.43 ml) H 2 O cartridge case capacity. The exterior shape of the case was designed to promote reliable case feeding and extraction under extreme conditions for both bolt-action rifles and machine guns.
The widespread availability of standard-size Mauser 98 rifles in central Europe and the fact that the .375 H&H Magnum cartridge and its necked-down version the .300 H&H Magnum with approximately 72.4 mm case length and 91.4 mm (3.60 in) overall length were too long to fit in standard-sized Mauser 98 bolt-action rifles made the shorter 9.3×64mm ...