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The .450 Bushmaster is descended from the Thumper concept popularized by the gun writer Jeff Cooper.Cooper was dissatisfied with the small-diameter 5.56×45mm NATO (.223 Remington) of the AR-15, and envisioned a need for a large bore (.44 cal or greater) cartridge in a semi-automatic rifle to provide one-shot kills on big-game animals at 250 yards.
The company's product line revolves around semi-automatic pistol and rifle variants of the M4/AR-15 design. It is currently in full operation and is based in Carson City, Nevada. Bushmaster Firearms is unrelated to the M242 Bushmaster autocannon, which was produced by Northrop Grumman.
This is a table of selected pistol/submachine gun and rifle/machine gun cartridges by common name. Data values are the highest found for the cartridge, and might not occur in the same load (e.g. the highest muzzle energy might not be in the same load as the highest muzzle velocity, since the bullet weights can differ between loads).
The .450 SMC is a .45 ACP wildcat cartridge for use in robust .45 ACP firearms that uses a modified .308 Winchester case with a small rifle primer adapted for use in modern .45 ACP firearms. Only 1911 pistols or heavier firearms with upgraded heavier springs are recommended.
The design takes the operating system of the Armalite AR-18 and moves the pistol grip forward in a manner similar to the British SA80. Instead of the sheet metal receiver of the AR18 and SA80, the Bushmaster M17S uses an extruded 7075-T6 aluminum receiver that serves as the stock and foregrip as well. This method of construction is particularly ...
STANAG magazines loaded with .223 Rem (left) and .450 Bushmaster (right) Over the years different cartridges that fit into the STANAG magazine emerged, some rounds like .300 AAC Blackout have the same rim diameter as .223 Remington and only require a barrel change to be used in a firearms that was previously using in .223 Remington .
The .450 Adams was a British black powder centrefire revolver cartridge, initially used in converted Beaumont–Adams revolvers, in the late 1860s. [1] Officially designated .450 Boxer Mk I, and also known variously as the .450 Revolver, .450 Colt, .450 Short, .450 Corto, and .450 Mark III, and in America as the .45 Webley, [2] it was the British Army's first centrefire revolver round.
Since the rifle was designed for use on Alaska's great bears, Johnson cut 720-grain (47 g) boat-tail .50 BMG bullets in half, seating the 450-grain (29 g) rear half upside down in the fireformed .50-caliber case. It didn't take Johnson long to find out that the truncated-shaped "solid" would shoot through a big brown bear from any direction ...