45 Auto (ACP) Ammo

An iconic American cartridge, the .45 ACP was popularized in John Browning’s classic Colt Model 1911 pistol. Today it remains as popular as ever – with military, police and civilian shooters continuing to make this cartridge their choice for personal protection. Learn More

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  1. Remington 45 Auto Ammo - 500 Rounds of 230 Grain JHP Ammunition

    8 In stock now

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    Image For 500 Rounds Of 230 Grain JHP Boxer Brass 45 Auto Remington Ammunition
    $379.99 Price

    Qty:

    • 500 Rounds
    • Made by Remington

    • New Condition
    • 500 Rounds
    • Made by Remington
    • American-made Self-Defense
    • 76¢ Cost Per Round
    • Remington SKU RTP45AP7
    • UPC 047700427416
  2. Winchester Win1911 45 Auto Ammo - 50 Rounds of 230 Grain JHP Ammunition

    46 In stock now

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    Image For 50 Rounds Of 230 Grain JHP Boxer Nickel-Plated Brass 45 Auto Winchester Ammunition
    $38.00 Price

    Qty:

    • 50 Rounds
    • Made by Winchester

    • New Condition
    • 50 Rounds
    • Made by Winchester
    • American-made Self-Defense
    • 76¢ Cost Per Round
    • Winchester SKU X45P
    • UPC 020892220195
  3. Remington 45 Auto Ammo - 50 Rounds of 230 Grain JHP Ammunition

    16 In stock now

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    Image For 50 Rounds Of 230 Grain JHP Boxer Brass 45 Auto Remington Ammunition
    $39.00 Price

    Qty:

    • 50 Rounds
    • Made by Remington

    • New Condition
    • 50 Rounds
    • Made by Remington
    • American-made Discount Defense
    • 78¢ Cost Per Round
    • Remington SKU RTP45AP7
    • UPC 047700427409
  4. Speer Gold Dot 45 Auto +P Ammo - 50 Rounds of 200 Grain JHP Ammunition

    22 In stock now

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    Image For 50 Rounds Of 200 Grain JHP Boxer Nickel-Plated Brass 45 Auto Speer Ammunition
    $40.00 Price

    Qty:

    • 50 Rounds
    • Made by Speer

    • New Condition
    • 50 Rounds
    • Made by Speer
    • American-made Self-Defense
    • 80¢ Cost Per Round
    • Speer SKU 53969
    • UPC 076683539694
  5. Winchester 45 Auto Ammo - 50 Rounds of 230 Grain JHP Ammunition

    16 In stock now

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    Image For 50 Rounds Of 230 Grain JHP Boxer Brass 45 Auto Winchester Ammunition
    $41.00 Price

    Qty:

    • 50 Rounds
    • Made by Winchester

    • New Condition
    • 50 Rounds
    • Made by Winchester
    • American-made Discount Defense
    • 82¢ Cost Per Round
    • Winchester SKU USA45JHP
    • UPC 020892213234
  6. Hornady 45 Auto Ammo - 20 Rounds of 200 Grain JHP Ammunition

    53 In stock now

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    Image For 20 Rounds Of 200 Grain JHP Boxer Brass 45 Auto Hornady Ammunition
    $17.99 Price

    Qty:

    • 20 Rounds
    • Made by Hornady

    • New Condition
    • 20 Rounds
    • Made by Hornady
    • American-made Self-Defense
    • 90¢ Cost Per Round
    • Hornady SKU 9112
    • UPC 090255391121
  7. Hornady 45 Auto Ammo - 20 Rounds of 230 Grain JHP Ammunition

    54 In stock now
    Image For 20 Rounds Of 230 Grain JHP Boxer Brass 45 Auto Hornady Ammunition
    $19.00 Price

    Qty:

    • 20 Rounds
    • Made by Hornady

    • New Condition
    • 20 Rounds
    • Made by Hornady
    • American-made Self-Defense
    • 95¢ Cost Per Round
    • Hornady SKU 9096
    • UPC 090255390964
  8. Winchester W Train & Defend 45 Auto Ammo - 20 Rounds of 230 Grain JHP Ammunition

    18 In stock now

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    Image For 20 Rounds Of 230 Grain JHP Boxer Nickel-Plated Brass 45 Auto Winchester Ammunition
    $20.50 Price

    Qty:

    • 20 Rounds
    • Made by Winchester

    • New Condition
    • 20 Rounds
    • Made by Winchester
    • American-made Discount Defense
    • $1.03 Cost Per Round
    • Winchester SKU W45D
    • UPC 020892221659
  9. Hornady 45 Auto Ammo - 20 Rounds of 200 Grain JHP Ammunition

    11 In stock now
    Image For 20 Rounds Of 200 Grain JHP Boxer Brass 45 Auto Hornady Ammunition
    $22.00 Price

    Qty:

    • 20 Rounds
    • Made by Hornady

    • New Condition
    • 20 Rounds
    • Made by Hornady
    • American-made Self-Defense
    • $1.10 Cost Per Round
    • Hornady SKU 9113
    • UPC 090255391138
  10. Hornady 45 Auto Ammo - 20 Rounds of 185 Grain JHP Ammunition

    57 In stock now

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    Image For 20 Rounds Of 185 Grain JHP Boxer Nickel-Plated Brass 45 Auto Hornady Ammunition
    $22.99 Price

    Qty:

    • 20 Rounds
    • Made by Hornady

    • New Condition
    • 20 Rounds
    • Made by Hornady
    • American-made Self-Defense
    • $1.15 Cost Per Round
    • Hornady SKU 90900
    • UPC 090255909005
  11. Hornady Duty Defense 45 Auto +P Ammo - 20 Rounds of 220 Grain FTX JHP Ammunition

    55 In stock now
    Image For 20 Rounds Of 220 Grain JHP Boxer Nickel-Plated Brass 45 Auto Hornady Ammunition
    $22.99 Price

    Qty:

    • 20 Rounds
    • Made by Hornady

    • New Condition
    • 20 Rounds
    • Made by Hornady
    • American-made Self-Defense
    • $1.15 Cost Per Round
    • Hornady SKU 90926
    • UPC 090255909265
  12. Winchester 45 Auto Ammo - 20 Rounds of 185 Grain JHP Ammunition

    12 In stock now

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    Image For 20 Rounds Of 185 Grain JHP Boxer Brass 45 Auto Winchester Ammunition
    $23.00 Price

    Qty:

    • 20 Rounds
    • Made by Winchester

    • New Condition
    • 20 Rounds
    • Made by Winchester
    • American-made Self-Defense
    • $1.15 Cost Per Round
    • Winchester SKU X45ASHP2
    • UPC 020892201675
  13. Barnes TAC-XPD 45 Auto Ammo - 20 Rounds of +P 185 Grain SCHP Ammunition

    30 In stock now
    Image For 20 Rounds Of 185 Grain JHP Boxer Nickel-Plated Brass 45 Auto Barnes Ammunition
    $23.00 Price

    Qty:

    • 20 Rounds
    • Made by Barnes

    • New Condition
    • 20 Rounds
    • Made by Barnes
    • American-made Self-Defense
    • $1.15 Cost Per Round
    • Barnes SKU 21555
    • UPC 716876145010
  14. Winchester 45 Auto Ammo - 20 Rounds of 230 Grain JHP Ammunition

    31 In stock now
    Image For 20 Rounds Of 230 Grain JHP Boxer Nickel-Plated Brass 45 Auto Winchester Ammunition
    $23.50 Price

    Qty:

    • 20 Rounds
    • Made by Winchester

    • New Condition
    • 20 Rounds
    • Made by Winchester
    • American-made Self-Defense
    • $1.18 Cost Per Round
    • Winchester SKU S45PDB
    • UPC 020892217898
  15. Black Hills Ammunition 45 Auto +P Ammo - 20 Rounds of 185 Grain Barnes TAC-XP HP Ammunition

    28 In stock now

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    Image For 20 Rounds Of 185 Grain JHP Boxer Brass 45 Auto Black Hills Ammunition Ammunition
    $25.50 Price

    Qty:

    • 20 Rounds
    • Made by Black Hills Ammunition

    • New Condition
    • 20 Rounds
    • Made by Black Hills Ammunition
    • American-made Self-Defense
    • $1.28 Cost Per Round
    • Black Hills Ammunition SKU D45N720
    • UPC 612710128778
  16. Speer 45 Auto Ammo - 20 Rounds of 185 Grain JHP Ammunition

    14 In stock now

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    Image For 20 Rounds Of 185 Grain JHP Boxer Nickel-Plated Brass 45 Auto Speer Ammunition
    $26.50 Price

    Qty:

    • 20 Rounds
    • Made by Speer

    • New Condition
    • 20 Rounds
    • Made by Speer
    • American-made Self-Defense
    • $1.33 Cost Per Round
    • Speer SKU 23964
    • UPC 076683239648
  17. Corbon 45 Auto Ammo - 20 Rounds of 160 Grain DPX Ammunition

    39 In stock now

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    Image For 20 Rounds Of 160 Grain JHP Boxer Brass 45 Auto Corbon Ammunition
    $29.00 Price

    Qty:

    • 20 Rounds
    • Made by Corbon

    • New Condition
    • 20 Rounds
    • Made by Corbon
    • American-made Self-Defense
    • $1.45 Cost Per Round
    • Corbon SKU DPX45160/20
    • UPC 757750450165
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Designed by John Moses Browning as a replacement for the "less than stellar" .38 Long Colt cartridge for the U.S. military, the .45 ACP was introduced in 1905. Originally, the .45 ACP had a 200 grain bullet that traveled 900 feet per second. But along with the M1911 pistol, the .45 ACP cartridge was tested by the U.S. Army over the next six years, where both the ammo and the firearm were modified. The bullet weight was increased to 230 grains without a change in the powder load, so muzzle velocity for this new bullet dropped to 830 feet per second – which remained the standard load for its service life.

Sgt. Alvin York in World War I used his .45 ACP to singlehandedly kill six German soldiers while assaulting their machine gun emplacements, supporting the claim of the cartridge as an excellent man stopper. While his story is one of the more famous, other Medal of Honor recipients besides York used the .45 ACP. And since being adopted in 1911 by the military, at least 68 awardees of the Medal of Honor have carried the .45 ACP and the M1911 pistol in the course of their heroic actions.

The .45 ACP is used outside of the Armed Forces in a plethora of applications that include sport shooting, law enforcement and self defense. Target shooters appreciate the .45 ACP for its accuracy, mild recoil and heavy bullet. Major ammunition manufacturers produce .45 ACP in specialty configurations just for personal protection – including Hornady, Federal and Magtech.

Law enforcement agencies that have chosen the .45 ACP for its proven ability to effectively stop dangerous aggressors include the FBI’s Hostage Rescue Team, the Los Angeles Police Department SWAT, and other specialized law enforcement units. The U.S. military officially replaced the .45 ACP with the 9mm in 1985, though it continues to find pockets of dedicated users in the Service. Operators of the Marine Expeditionary Units, Delta Force and others within the purview of the United States Special Operations Command have the option of using pistols chambered in the .45 ACP.

The .45 ACP, after more than a century of use, is a cartridge that has been modified and studied extensively, and is used all over the world. Today, it remains one of the most prized cartridges on the market.

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