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The heavier bullet produced significantly superior ballistics and could reach ranges of 3,350 yd (3,060 m), which were beyond the maximum range of the .45-70-405. While the effective range of the .45-70 on individual targets was limited to about 1,000 yd (910 m) with either load, the heavier bullet produced lethal injuries at 3,500 yards (3,200 m).
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.
Over 50,000 Model 1868 rifles were manufactured, chambered for the .50-70 450 cartridge. This model served as the basis for the definitive Springfield Model 1873 series of rifles in .45-70-405 caliber, which was adopted in 1873 as the standard military longarm of the United States armed forces for the next 20 years.
The Model 1874 rifles and carbines were available in a variety of calibers, including .45-70, .45-110, and .45-120. Action: Falling block: Rate of fire: 8–10 shots per minute: Muzzle velocity: 1,200 ft/s (370 m/s) Effective firing range: 1,000 yd (910 m) Maximum firing range: 3,000 yd (2,700 m) Feed system: Breech-loading: Sights: Open ladder ...
Springfield Model 1870 (center) The Springfield Model 1870 was one of the rifles which used the trapdoor breechblock design developed by Erskine S. Allin. The Model 1870 was a minor improvement to the Springfield Model 1868, and retained most of the Model 1868 rifle features.
This is the equivalent of +P loading as normal pressure for the .45 Colt is 14,000 psi (97 MPa). [11] In a section specifically titled "45 Colt for Ruger or Contender only" Speer makes reference to velocities up to 1,300 ft/s (400 m/s) with 200 gr (13 g) bullets. They also state that pressures do not exceed 25,000 psi (170 MPa) (CUP).
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The Bofors 40 mm Automatic Gun L/70, [1] (Bofors 40 mm L/70, Bofors 40 mm/70, Bofors 40/70 and the like), is a multi-purpose autocannon developed by the Swedish arms manufacturer AB Bofors (today BAE Systems Bofors) during the second half of the 1940s as a modern replacement for their extremely successful World War II-era Bofors 40 mm L/60 gun-design.