View source for .45 ACP

{{Infobox firearm cartridge
|name= .45 ACP
|image= File:Cartridge .45 ACP CC BY-SA 4.0 by Grasyl.jpg
|image size = 220px
|caption= .45 ACP cartridge [[full metal jacket bullet|full metal jacket]]
|origin=United States
|type= [[Pistol]]
<!-- Production info -->
|designer= [[John Browning]]
|design_date= 1904
|production_date = 1905–present
|manufacturer=
|parent=
|variants= [[Overpressure ammunition#Commercially available .2BP cartridges|.45 ACP +P]], [[.45 Auto Rim]], [[.45 Super]], .460 Rowland
|wars= [[World War I]] – present
|case_type= Rimless, straight
|bullet= .452
|neck= .473
|shoulder=
|base= .476
|rim_dia= .480
|rim_thick= .049
|case_length= .898
|length= 1.275 
|case_capacity=26.7
|rifling= 1 in 16 in (406 mm)
|primer= Large (some makers are now using Small) [[Pistol]]
|max_pressure=19900
|pressure_method=CUP
|max_pressure2=21000
|pressure_method2=SAAMI
<!-- Ballistic performance -->
|is_SI_units=
|bw1=230
|btype1=FMJ, Winchester
|vel1=835
|en1=356
|bw2=165
|btype2=Hydra-shok, Federal
|vel2=1060
|en2=412
|bw3=230
|btype3=FMJ, Double Tap
|vel3=960
|en3=471
|bw4=185
|btype4=JHP +P, Underwood
|vel4=1200
|en4=592
|bw5=90
|btype5=TFSP, RBCD
|vel5=2036
|en5=829
}}
The '''.45 ACP''' ([[Automatic Colt Pistol]]) or '''45 Auto''' (11.43×23mm)<ref>{{Cite book|title=HANDBOOK OF HANDGUNS.|last=JEFFREY.|first=STRICKLAND, PRESIDENT|page=151|date=2014|publisher=LULU COM|isbn=978-1300973294|location=[S.l.]|oclc=1020871429}}</ref> is a type of [[bullet]], made to be used in the [[M1911]] pistol used by the U.S. Military. It was first made by [[John Browning]] in 1904, the "ACP" in the name stands for "Automatic Colt Pistol". It was the standard for [[Pistol|handguns]] in the U.S. military until they switched to the Beretta M9 ([[Beretta 92]]) in 1985 that used a smaller caliber [[9mm]] bullet.

The .45 is famous for being the bullet used in the [[Colt M1911|M1911]] and for being the choice of the U.S. Military for their pistols for almost 75 years. The .45 ACP has good [[stopping power]] because of the large size of the bullet, a .45 ACP bullet is almost half an inch. When shot at human targets, the .45 ACP bullet makes a big hole that causes blood loss and leads to faster death. 

It was used for guns like the [[Colt M1911|M1911]], the [[Thompson submachine gun]], the [[M3 Grease Gun]], the [[USP45]], the [[UMP45]], the [[KRISS Vector|TDI Kriss Super V]], the [[MAC-10]], and many other guns.

== References ==
{{reflist}}

[[Category:Weapons]]
[[Category:Ammunition]]


{{Military-stub}}