The 50 Browning Machine Gun, sometimes known as the 50 BMG, is a 50 in (12.7 mm) caliber cartridge that was created for the M2 Browning heavy machine gun in the late 1910s and entered formal service in 1921. The machine gun was initially produced during World War I, and despite being cumbersome, the tank began to find its place on the battlefield—it was also resistant to most rifle and artillery shots.
The 50 BMG cartridge has a 290-gram capacity (19 g). The round is a scaled-up version of the 30-06 Springfield, but it has a case wall with a long taper to make feeding and extraction easier in different guns. This cartridge's rifling twist rate is 1 in 15 in (380 mm), with eight lands and grooves.
The 50 Browning Machine Gun is employed in anti-materiel rifles in addition to the M2 Browning heavy machine gun. There is a wide range of ammunition available, and match grade ammunition has boosted the use of 50 caliber rifles by allowing for more precise firing than lesser quality rounds. During WWII, the 50 BMG was principally utilized for anti-aircraft duties in the M2 Browning machine gun, both in its "light barrel" aircraft mount form and the "heavy barrel" (HB) version on ground vehicles.
Depending on the powder and bullet type, as well as the weapon from which it is shot, the 50 BMG round may create between 10,000 and 15,000 foot-pounds force (14,000 and 20,000 J). The 50 BMG's trajectory suffers less "drift" from cross-winds than smaller and lighter calibers due to the high ballistic coefficient of the bullet, making it an excellent option for high-powered sniper rifles.
The .50 Action Express Ammo is a large caliber cartridge for handguns, best known for chambering in Desert Eagle. The .50 Action Express Ammo was designed and introduced into the markets in 1988 and ever since has been called one of the most powerful handgun cartridges in production. The .50 Action Express Ammo had a rough start in the United States because of the strict laws governing non-sporting firearms. The .50 Action Express Ammo was reduced to .500 inches instead of the original .510 inches to make it legal in the US for use. The bullet, however, retained its power and destructive capabilities regardless. But with great power comes great recoil. The .50 Action Express Ammo has a substantial recoil, making it unsuitable for repetitive shooting sessions. The overall length of the .50 Action Express Ammo is 32.6mm, and the overall bullet diameter measures 12.7mm. The heaviest variant of the .50 Action Express Ammo is the 325-grain bullet load that travels at a velocity of 1,450 feet per second while creating an energy level of 1,517 ft.lbf.
The .50 Action Express Ammo was designed and manufactured by the American Evan Whildin of Action Arms in 1988 in the United States.
Like any other gun of these capabilities, the .50 Action Express Ammo is used for metallic silhouette shooting and hunting down medium to big-sized games.