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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 ...
[1] [4] That is, if a given munitions design has a CEP of 100 m, when 100 munitions are targeted at the same point, an average of 50 will fall within a circle with a radius of 100 m about that point. There are associated concepts, such as the DRMS (distance root mean square), which is the square root of the average squared distance error, a ...
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.
In cartridges surviving from the black-powder era (examples being .45 Colt, .45-70 Government), the case is much larger than is needed to hold the maximum charge of high-density smokeless powder. This extra room allows the powder to shift in the case, piling up near the front or back of the case and potentially causing significant variations in ...
The 45 Raptor is a relatively flat shooting cartridge to 200 yards. From muzzle to 200 yards, there is no more than a 3" rise or drop with bullet weights of 185 grains to 300 grains. [ 2 ] This means a shooter can shoot into a 6" diameter circle at all distances to 200 yards with no hold over.
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)
For instance a professional shooter may be able to repeatably hit a given size target, i.e. a 100 mm ring, at 1000 meters (0.1 mil target difficulty) in low and predictable wind, while the same 100 mm target may be near impossible to hit in heavy and varying wind at 200 meters (0.5 mil target difficulty).
Stage 2: Rapid fire (10 shots in 60 seconds with reload), sitting or kneeling, at 200 yards; Stage 3: Rapid fire (10 shots in 70 seconds with reload), prone, at 300 yards Shooters load 2 rounds in one magazine and 8 in the other, or 5 and 5 in some instances like match rifle. Stage 4: Slow fire (20 shots in 20 minutes), prone, at 600 yards