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In 1884, the US Ordnance Department increased the bullet weight of the 45–70 to 45–70–500, or a 45 caliber bullet, 70 grains of black powder, and a 500 grain bullet. [3] The new 45-70-500 loading was recorded with a muzzle velocity of 1315.7 feet, and generated 1525 ft lbs of energy at 100 yds, and 562.3 ft lbs of energy at 1,000 yards ...
According to the US Army Ordnance Department tests, the 45-70-405 was loaded to 19,000 psi, [4] while the 45-70-500 was loaded to 25,000 psi [2] The average accuracy of the Springfield Model 1873 was a circle with an average radius of 1.7 inches at 100 yards, corresponding to an ~3.4 MOA.
Here is an example of a ballistic table for a .30 calibre Speer 169 grain (11 g) pointed boat tail match bullet, with a BC of 0.480. It assumes sights 1.5 inches (38 mm) above the bore line, and sights adjusted to result in point of aim and point of impact matching 200 yards (183 m) and 300 yards (274 m) respectively.
With a 200 yard zero, the ballistics chart looks like this: yds inches; 100 +11.5; 200 0; 300 -41.1; 400 -116.5; 500 -230.1; So a 200 yard ain't gonna cut it for a max point blank range on a deer, that 11.5" hump puts you right over the back of the deer. scot 15:51, 31 May 2006 (UTC)
Rifles produced during the Federal Assault Weapons Ban from 1994 to 2004 included integrally machined muzzle brakes that served to reduce muzzle rise and recoil. [14] Further more, these muzzle brakes added additional length to barrels to achieve the 16.5 inches that would otherwise have been considered short-barreled rifles under the National ...
The .45-75 was shorter and fatter than the .45-70 government cartridge. Although the .45-75 was nominally superior to the popular .45-70, the weak toggle-link action with its elevator-style carrier originally designed for handgun cartridges limited the ability of the Model 1876 rifle to safely fire higher pressure loads intended for stronger ...
Handguns are typically less accurate; at a shooting distance of 25 yd, a grouping is considered acceptable for self-defense if the shots fall within a circle of 4 to 5 inches, which is 15 to 19 MOA (equivalent to a grouping of 100-150 mm at 25 meters, which is 4-6 mils), [9] representing the shot pattern needed to hit the vital organs of a ...
The Springfield, manufactured in a .45–70 long rifle version for the infantry and a .45–55 light carbine version for the cavalry, was judged a solid firearm that met the long-term and geostrategic requirements of the United States fighting forces. [198] Tomahawk and sabre; or even odds, painting by Charles Schreyvogel (1861–1912). This ...