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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.
This article may lack conversion for SI units. Please add them to this article , preferably with {{ convert }} . Common rifle cartridges, from the largest .50 BMG to the smallest .22 Long Rifle with a $1 United States dollar bill in the background as a reference point.
Other black powder-era cartridges used naming schemes that appeared similar, but measured entirely different characteristics; 45-70, 44-40, and 32-20 were designated by bullet diameter to hundredths of an inch and standard black powder charge in grains. Optionally, the bullet weight in grains was designated, such as 45-70-405. [2]
In 1990, the Western film Quigley Down Under, Tom Selleck's title character uses a Sharps rifle chambered in the .45-110, also known as the 45-2 7 ⁄ 8" Sharps. Theater Crafts Industry went so far as to say, "In Quigley Down Under , which we did in 1990, the Sharps rifle practically co-stars with Tom Selleck."
4 Conversion guide. ... Aftermarket backboring is also commonly done to reduce the weight of the barrel and move the center of ... 27.45: 12,010 0.75 * 46.70: 1.838 ...
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The new barrel was slightly shorter, 32.5 inches, compared to the 36.5-inch barrel used on the Springfield Model 1866. The shorter barrel was affixed using only two barrel bands, instead of the three used on the Model 1866. Since it lacked the middle barrel band, the sling was affixed to the upper barrel band instead.