.45 ACP

The .45 ACP (11.43×23mm) (Automatic Colt Pistol), also known as the .45 Auto by C.I.P. or 45 Auto by SAAMI, is a cartridge designed by John Browning in 1904, for use in his prototype Colt semi-automatic .45 pistol and eventually the M1911 pistol adopted by the United States Army in 1911.

Design and history

The U.S. Cavalry had been buying and testing various handguns in the late 1890s and early 20th century. The .45 Colt Single Action Army (SAA) had largely been replaced, even by some double-action versions of the same. The Army had fielded some double-action revolvers in .38 Long Colt. They determined the .38 caliber round was significantly less effective against determined opponents, such as the warriors encountered in the Moro Rebellion of the Philippine–American War, than the .45 Colt. The current issue rifle at the time, the .30-40 Krag, had also failed to stop Moro warriors effectively; the British had similar issues switching to the .303 British, which resulted in the development of the dum-dum bullet. This experience, and the Thompson–LaGarde Tests of 1904 led the Army and the Cavalry, to decide a minimum of .45 caliber was required in the new handgun. Thompson and Major Louis Anatole La Garde of the Medical Corps arranged tests on cadavers and animal remains in the Chicago stockyards, resulting in the finding that .45 was the most effective pistol cartridge. They noted, however, training was critical to make sure a soldier could score a hit in a vulnerable part of the body.

.45 caliber ammunition

.45 caliber ammunition comprises bullets (approximately 0.45 inch in diameter), first standardized by Colt's Patent Firearms Manufacturing Company in 1872.

That original .45 Colt round was developed along with the Colt Single Action Army revolver for the U.S. Army.

The .45-70 cartridge followed the next year, developed at the Army's Springfield Armory for the breech-loading Springfield Model 1873 rifle.

The .45 ACP is a cartridge designed by John Browning in 1904, for use in the prototype Colt semi-automatic .45 pistol he also designed. This ammunition also served the M1911 pistol adopted by the Army in 1911.

The .45 GAP is a variant of the regular .45 cartridge, designed on behalf of Glock for more compact handguns.

See also

ACP

ACP may refer to:

Organizations

Science & technology

40 Cal.

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Calvin Alan Byrd, better known as 40 Cal, was an American rapper. He was a member of Harlem-based Hip-Hop group The Diplomats.

40 Cal made his first appearance on the self-titled theme song, "40 Cal" for the Dipset album Diplomatic Immunity 2. He took a part on MTV2's Fight Klub MC battles.

Discography

Studio Albums

Street LPs

EPs

Mixtapes

Guest appearances

References

40 Cal Is Now Managed By Masar (Max B Engineer & Designer) 1st-n-o

External links