.50 Action Express
The .50 Action Express (.50 AE) was developed in 1988 for the IMI Desert Eagle semi-auto pistol imported by Magnum Research, Inc. It is another development by Evan Whildin, then of Action Arms. It was part of a program to upgrade the performance of the semi-auto pistol through new cartridge design. The .50 AE has the same rim diameter, case length and overall length as the .44 Magnum. However, the base diameter is .547 inch, so like the .41 AE the .50 AE has a rebated rim. The reason is so the cartridge can be chambered in the Desert Eagle pistol without making any changes in the basic design. The pistol is already chambered for the .44 Magnum, and by retaining the same rim diameter, the change in caliber to .50 AE will require only a new barrel. This is a very practical approach.
The .50 AE uses a .500 inch diameter bullet weighing 325 grains at a muzzle velocity of 1400 fps. The 300 grain bullet at 1400 fps delivers 1414 foot pounds of energy, which makes the .50 AE one of the worlds most powerful pistol cartridges. It is an excellent field cartridge for deer sized animals or as a backup when hunting dangerous game.
Source: Cartridges of the World
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