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The Taylor KO factor multiplies bullet mass (measured in grains) by muzzle velocity (measured in feet per second) by bullet diameter (measured in inches) and then divides the product by 7,000, converting the value from grains to pounds and giving a numerical value from 0 to ~150 for normal hunting cartridges.
The .450 Dakota should be considered the ballistic equivalent of the .460 Weatherby Magnum from the standpoint of power and operating pressure. .450 Rigby performance tends to be somewhat lower, due to the 4,000 bar (58,000 psi) P max stipulated by the CIP.
.950 JDJ cases are approximately 70 mm in length, and are based on a 20×102mm Vulcan case shortened and necked up to accept the .950 in (24.1 mm) bullet. Projectiles are custom-made and most commonly weigh 3,600 grains (230 g) which is 8.2 ounces or over half a pound.
The .405 Winchester / 10.45x65mmR (.405 WCF) is a rimmed centerfire rifle cartridge introduced in 1904 for the Winchester 1895 lever-action rifle. [4] It remains to this day one of the most powerful rimmed cartridges designed specifically for lever-action rifles; the only modern lever action cartridges that exceed its performance are the .50 Alaskan, .450 Alaskan, .475 Turnbull, .348 Turnbull ...
The .204 Ruger / 5.2x47mm is a centerfire rifle cartridge developed by Hornady and Ruger.At the time of its introduction in 2004, the .204 Ruger was the second-highest velocity commercially produced ammunition and the only centerfire cartridge produced commercially for bullets of .204 inch/5 mm caliber.
The .470 Nitro Express / 12.7x83mmR is a rifle cartridge developed by Joseph Lang in England for dangerous game hunting in Africa and India. This cartridge is used almost exclusively in double rifles.
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The standard factory loads, produced and sold by the Sharps Rifle Manufacturing Company and the Sharps Rifle Company were .50/100/425 (.50 caliber/100 grains black powder/425 grain grease grooved bullet) and .50/100/473 (.50 caliber/100 grains black powder/473 grain grease grooved bullet) with a paper patched bullet.