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The cartridge was originally sold as .44 Winchester. When the Union Metallic Cartridge Co. (UMC) began selling their own version of the cartridge, it adopted the name .44-40 (shorthand for .44 caliber and the standard load at the time of 40-grain (2.6 g) of black powder), as it
The .440 Cor-Bon is a large-caliber handgun cartridge, first produced by Cor-Bon in 1998. Although it looks similar to a .357 SIG, this cartridge was designed after being necked down from an existing cartridge, the .50 AE to accept a .44-caliber (.429 in) (10.89 mm) bullet. This is fairly typical in the wildcat cartridge industry.
[24] [25] The limiting factor of the .44 Magnum cartridge is not terminal ballistics. When fired from a 6 in (152 mm) revolver, a typically loaded .44 Magnum 240 gr (16 g) bullet will have more impact energy at 150 yd (137 m) than a 246 gr (15.9 g) .44 Special has at the muzzle, when fired from the same weapon. [26]
The .429 DE is a .50 AE case that is necked down to accept .429-diameter (10.9mm) bullets used in the .44 Magnum.The cartridge features a 25% increase in velocity and 45% increase of energy over a standard 240-grain .44 Magnum load of 1,285 ft⋅lbf (1,742 J) at 100 yd (91 m). [2]
Given the same bullet and cartridge, a faster burning powder will generally use a smaller charge of powder than required with a slower powder. For example, a 44 Magnum firing a 240-grain lead semi-wadcutter could be loaded with either Accurate Arms #2, a very fast pistol powder, or #9, a very slow pistol powder. When using the minimum loads, 9. ...
An old .38-40 Winchester sample. It is unclear why this cartridge was introduced, as it is very similar to the .44-40 from which it was derived. It has approximately 110 ft⋅lbf (150 J) less muzzle energy, and has a muzzle velocity about 110 ft/s (34 m/s) less than the .44-40.
This created a cartridge case stronger than the .45 Winchester Magnum cartridge case. The .40 Super cartridge case was designed for a balance of strength and powder capacity. To maximize bullet pull and overall feeding characteristics, the case has a neck length of .175 in. The shoulder angle is an optimum 25 degrees.
"Grain foot per second" (gr·ft/s) can be obtained by measuring the mass in grains (gr) (7,000 to the pound) and velocity in feet per second (ft/s), but since their product yields a very large number it is common to multiply by a factor of 1 ⁄ 1000, obtaining the power factor in kilo grain foot per second instead.