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

Live Inventory

Set Descending Direction
Page:
  1. 1
  2. 2
  3. 3
per page
  1. Blazer Brass 45 Auto Ammo - 200 Rounds of 230 Grain FMJ Ammunition

    3 In stock now

    Submit A Review

    Image For 200 Rounds Of 230 Grain FMJ Boxer Brass 45 Auto Blazer Brass Ammunition
    $80.99 Price

    Qty:

    • 200 Rounds
    • Made by Blazer Brass

    • New Condition
    • 200 Rounds
    • Made by Blazer Brass
    • American-made Discount Range
    • 40.5¢ Cost Per Round
    • Blazer Brass SKU 52301
    • UPC 076683523013
  2. Winchester 45 Auto Ammo - 50 Rounds of 230 Grain FMJ Ammunition

    47 In stock now

    Submit A Review

    Image For 50 Rounds Of 230 Grain FMJ Boxer Brass 45 Auto Winchester Ammunition
    $20.99 Price

    Qty:

    • 50 Rounds
    • Made by Winchester

    • New Condition
    • 50 Rounds
    • Made by Winchester
    • American-made Discount Range
    • 42¢ Cost Per Round
    • Winchester SKU SG45W
    • UPC 020892221734
  3. Fiocchi 45 Auto Ammo - 50 Rounds of 230 Grain FMJ Ammunition

    1 In stock now

    Submit A Review

    Image For 50 Rounds Of 230 Grain FMJ Boxer Brass 45 Auto Fiocchi Ammunition
    $21.00 Price

    Qty:

    • 50 Rounds
    • Made by Fiocchi

    • New Condition
    • 50 Rounds
    • Made by Fiocchi
    • Foreign Discount Range
    • 40.5¢ to 42¢ Cost Per Round
    • Fiocchi SKU 45A
    • UPC 762344001166
  4. Winchester 45 Auto Ammo - 50 Rounds of 230 Grain FMJ Ammunition

    43 In stock now

    Submit A Review

    Image For 50 Rounds Of 230 Grain FMJ Boxer Brass 45 Auto Winchester Ammunition
    $21.25 Price

    Qty:

    • 50 Rounds
    • Made by Winchester

    • New Condition
    • 50 Rounds
    • Made by Winchester
    • American-made Discount Range
    • 42.5¢ Cost Per Round
    • Winchester SKU Q4170
    • UPC 020892201910
  5. Blazer Brass 45 Auto Ammo - 200 Rounds of 230 Grain FMJ Ammunition

    41 In stock now

    Submit A Review

    Image For 200 Rounds Of 230 Grain FMJ Boxer Brass 45 Auto Blazer Brass Ammunition
    $84.99 Price

    Qty:

    • 200 Rounds
    • Made by Blazer Brass

    • New Condition
    • 200 Rounds
    • Made by Blazer Brass
    • American-made Discount Range
    • 42.5¢ Cost Per Round
    • Blazer Brass SKU 52302
    • UPC 076683523020
  6. Remington 45 Auto Ammo - 50 Rounds of 230 Grain MC Ammunition

    47 In stock now

    Submit A Review

    Image For 50 Rounds Of 230 Grain FMJ Boxer Brass 45 Auto Remington Ammunition
    $21.99 Price

    Qty:

    • 50 Rounds
    • Made by Remington

    • New Condition
    • 50 Rounds
    • Made by Remington
    • American-made Discount Range
    • 44¢ Cost Per Round
    • Remington SKU L45AP4
    • UPC 047700067803
  7. Browning BPT 45 Auto Ammo - 50 Rounds of 230 Grain FMJ Ammunition

    14 In stock now

    Submit A Review

    Image For 50 Rounds Of 230 Grain FMJ Boxer Nickel-Plated Brass 45 Auto Browning Ammunition
    $21.99 Price

    Qty:

    • 50 Rounds
    • Made by Browning

    • New Condition
    • 50 Rounds
    • Made by Browning
    • American-made Discount Range
    • 44¢ Cost Per Round
    • Browning SKU B191800451
    • UPC 020892222632
  8. Remington 45 Auto Ammo - 50 Rounds of 185 Grain MC Ammunition

    15 In stock now
    Image For 50 Rounds Of 185 Grain FMJ Boxer Brass 45 Auto Remington Ammunition
    $22.00 Price

    Qty:

    • 50 Rounds
    • Made by Remington

    • New Condition
    • 50 Rounds
    • Made by Remington
    • American-made Discount Range
    • 44¢ Cost Per Round
    • Remington SKU L45AP1
    • UPC 047700361802
  9. PMC 45 Auto Ammo - 250 Rounds of 230 Grain FMJ Ammunition

    11 In stock now

    Submit A Review

    Image For 250 Rounds Of 230 Grain FMJ Boxer Brass 45 Auto PMC Ammunition
    $109.99 Price

    Qty:

    • 250 Rounds
    • Made by PMC

    • New Condition
    • 250 Rounds
    • Made by PMC
    • Foreign Discount Range
    • 44¢ Cost Per Round
    • PMC SKU 45A-BP
    • UPC 741569070218
  10. Federal American Eagle 45 Auto Ammo - 50 Rounds of 230 Grain FMJ Ammunition (Trayless)

    40 In stock now

    Submit A Review

    Image For 50 Rounds Of 230 Grain FMJ Boxer Brass 45 Auto Federal Ammunition
    $22.25 Price

    Qty:

    • 50 Rounds
    • Made by Federal

    • New Condition
    • 50 Rounds
    • Made by Federal
    • American-made Discount Range
    • 44.5¢ Cost Per Round
    • Federal SKU AE45A50
    • UPC 029465063146
  11. PMC 45 Auto Ammo - 750 Rounds of 230 Grain FMJ Ammunition

    10 In stock now

    Submit A Review

    Image For 750 Rounds Of 230 Grain FMJ Boxer Brass 45 Auto PMC Ammunition
    $335.00 Price

    Qty:

    • 750 Rounds
    • Made by PMC

    • New Condition
    • 750 Rounds
    • Made by PMC
    • Foreign Discount Range
    • 44.7¢ Cost Per Round
    • PMC SKU 45A-BP
    • UPC 90741569070211
  12. Remington 45 Auto Ammo - 600 Rounds of 230 Grain JHP Ammunition

    13 In stock now

    Submit A Review

    Image For 600 Rounds Of 230 Grain JHP Boxer Brass 45 Auto Remington Ammunition
    $270.00 Price

    Qty:

    • 600 Rounds
    • Made by Remington

    • New Condition
    • 600 Rounds
    • Made by Remington
    • American-made Discount Defense
    • 45¢ Cost Per Round
    • Remington SKU L45AP7B
    • UPC 047700382463
  13. Winchester 45 Auto Ammo - 500 Rounds of 230 Grain FMJ Ammunition

    3 In stock now

    Submit A Review

    Image For 500 Rounds Of 230 Grain FMJ Boxer Brass 45 Auto Winchester Ammunition
    $230.00 Price

    Qty:

    • 500 Rounds
    • Made by Winchester

    • New Condition
    • 500 Rounds
    • Made by Winchester
    • American-made Range
    • 46¢ Cost Per Round
    • Winchester SKU X45TG
    • UPC 00020892220645
  14. Estate Cartridge 45 Auto Ammo - 50 Rounds of 230 Grain FMJ Ammunition

    7 In stock now

    Submit A Review

    Image For 50 Rounds Of 230 Grain FMJ Boxer Brass 45 Auto Estate Cartridge Ammunition
    $23.00 Price

    Qty:

    • 50 Rounds
    • Made by Estate Cartridge

    • New Condition
    • 50 Rounds
    • Made by Estate Cartridge
    • American-made Discount Range
    • 46¢ Cost Per Round
    • Estate Cartridge SKU ESH45230
    • UPC 029465063849
  15. Magtech 45 Auto Ammo - 50 Rounds of 230 Grain FEB Ammunition

    1 In stock now

    Submit A Review

    Image For 50 Rounds Of 230 Grain FMJ Boxer Brass 45 Auto Magtech Ammunition
    $24.99 Price

    Qty:

    • 50 Rounds
    • Made by Magtech

    • New Condition
    • 50 Rounds
    • Made by Magtech
    • Foreign-made Range
    • 50¢ Cost Per Round
    • Magtech SKU CR45A
    • UPC 754908186716
  16. Winchester 45 Auto Ammo - 50 Rounds of 230 Grain FMJ Ammunition

    5 In stock now

    Submit A Review

    Image For 50 Rounds Of 230 Grain FMJ Boxer Brass 45 Auto Winchester Ammunition
    $25.00 Price

    Qty:

    • 50 Rounds
    • Made by Winchester

    • New Condition
    • 50 Rounds
    • Made by Winchester
    • American-made Range
    • 50¢ Cost Per Round
    • Winchester SKU X45TG
    • UPC 020892220638
  17. Federal 45 Auto Ammo - 1000 Rounds of 230 Grain JHP Ammunition

    13 In stock now

    Submit A Review

    Image For 1000 Rounds Of 230 Grain JHP Boxer Brass 45 Auto Federal Ammunition
    $499.99 Price

    Qty:

    • 1000 Rounds
    • Made by Federal

    • New Condition
    • 1000 Rounds
    • Made by Federal
    • American-made Discount Defense
    • 50¢ Cost Per Round
    • Federal SKU 45D
    • UPC 50029465089042
  18. Fiocchi 45 Auto Ammo - 50 Rounds of 200 Grain JHP Ammunition

    26 In stock now

    Submit A Review

    Image For 50 Rounds Of 200 Grain JHP Boxer Brass 45 Auto Fiocchi Ammunition
    $25.75 Price

    Qty:

    • 50 Rounds
    • Made by Fiocchi

    • New Condition
    • 50 Rounds
    • Made by Fiocchi
    • Foreign Discount Defense
    • 51.5¢ Cost Per Round
    • Fiocchi SKU 45B
    • UPC 762344701295
  19. Remington 45 Auto Ammo - 500 Rounds of 185 Grain JHP Ammunition

    10 In stock now

    Submit A Review

    Image For 500 Rounds Of 185 Grain JHP Boxer Nickel-Plated Brass 45 Auto Remington Ammunition
    $260.00 Price

    Qty:

    • 500 Rounds
    • Made by Remington

    • New Condition
    • 500 Rounds
    • Made by Remington
    • American-made Self-Defense
    • 52¢ Cost Per Round
    • Remington SKU GS45APA
    • UPC 047700165820
  20. Fiocchi 45 Auto Ammo - 500 Rounds of 230 Grain JHP Ammunition

    10 In stock now

    Submit A Review

    Image For 500 Rounds Of 230 Grain JHP Boxer Brass 45 Auto Fiocchi Ammunition
    $260.00 Price

    Qty:

    • 500 Rounds
    • Made by Fiocchi

    • New Condition
    • 500 Rounds
    • Made by Fiocchi
    • Foreign Discount Defense
    • 52¢ Cost Per Round
    • Fiocchi SKU 45T500
    • UPC 762344863702
  21. Federal Hi-Shok 45 Auto Ammo - 50 Rounds of 230 Grain JHP Ammunition

    52 In stock now
    Image For 50 Rounds Of 230 Grain JHP Boxer Brass 45 Auto Federal Ammunition
    $27.49 Price

    Qty:

    • 50 Rounds
    • Made by Federal

    • New Condition
    • 50 Rounds
    • Made by Federal
    • American-made Self-Defense
    • 55¢ Cost Per Round
    • Federal SKU 45D
    • UPC 029465089047
  22. Federal 45 Auto Ammo - 500 Rounds of 230 Grain JHP Ammunition

    29 In stock now

    Submit A Review

    Image For 500 Rounds Of 230 Grain JHP Boxer Brass 45 Auto Federal Ammunition

    Price $324.99

    Price $274.99

    Qty:

    • 500 Rounds
    • Made by Federal

    • New Condition
    • 500 Rounds
    • Made by Federal
    • American-made Self-Defense
    • 55¢ Cost Per Round
    • Federal SKU C45D
    • UPC 50029465093148
  23. Magtech 45 Auto Ammo - 50 Rounds of 230 Grain JHP Ammunition

    7 In stock now
    Image For 50 Rounds Of 230 Grain JHP Boxer Brass 45 Auto Magtech Ammunition
    $27.99 Price

    Qty:

    • 50 Rounds
    • Made by Magtech

    • New Condition
    • 50 Rounds
    • Made by Magtech
    • Foreign Discount Defense
    • 56¢ Cost Per Round
    • Magtech SKU 45BONA
    • UPC 754908201211
  24. Remington 45 Auto Ammo - 500 Rounds of 185 Grain JHP Ammunition

    12 In stock now

    Submit A Review

    Image For 500 Rounds Of 185 Grain JHP Boxer Nickel-Plated Brass 45 Auto Remington Ammunition
    $279.99 Price

    Qty:

    • 500 Rounds
    • Made by Remington

    • New Condition
    • 500 Rounds
    • Made by Remington
    • American-made Self-Defense
    • 56¢ Cost Per Round
    • Remington SKU GS45APC
    • UPC 047700169729
  25. Fiocchi 45 Auto Ammo - 50 Rounds of 230 Grain JHP Ammunition

    15 In stock now

    Submit A Review

    Image For 50 Rounds Of 230 Grain JHP Boxer Brass 45 Auto Fiocchi Ammunition
    $28.05 Price

    Qty:

    • 50 Rounds
    • Made by Fiocchi

    • New Condition
    • 50 Rounds
    • Made by Fiocchi
    • Foreign Discount Defense
    • 56.1¢ Cost Per Round
    • Fiocchi SKU 45T500
    • UPC 762344701462
  26. Winchester 45 Auto Ammo - 50 Rounds of 230 Grain BEB Ammunition

    3 In stock now

    Submit A Review

    Image For 50 Rounds Of 230 Grain BEB Boxer Brass 45 Auto Winchester Ammunition
    $29.00 Price

    Qty:

    • 50 Rounds
    • Made by Winchester

    • New Condition
    • 50 Rounds
    • Made by Winchester
    • American-made Discount Range
    • 58¢ Cost Per Round
    • Winchester SKU WC452
    • UPC 020892211704
  27. Remington 45 Auto Ammo - 25 Rounds of 185 Grain JHP Ammunition

    42 In stock now
    Image For 25 Rounds Of 185 Grain JHP Boxer Nickel-Plated Brass 45 Auto Remington Ammunition
    $16.00 Price

    Qty:

    • 25 Rounds
    • Made by Remington

    • New Condition
    • 25 Rounds
    • Made by Remington
    • American-made Self-Defense
    • 64¢ Cost Per Round
    • Remington SKU GS45APA
    • UPC 047700165806
  28. Federal 45 Auto Ammo - 1000 Rounds of 230 Grain JHP Ammunition

    1 In stock now

    Submit A Review

    Image For 1000 Rounds Of 230 Grain JHP Boxer Nickel-Plated Brass 45 Auto Federal Ammunition
    $644.99 Price

    Qty:

    • 1000 Rounds
    • Made by Federal

    • New Condition
    • 1000 Rounds
    • Made by Federal
    • American-made Self-Defense
    • 64.5¢ Cost Per Round
    • Federal SKU P45HS1G
    • UPC 50029465088656
  29. Winchester 45 Auto Ammo - 50 Rounds of 185 Grain BEB Ammunition

    7 In stock now

    Submit A Review

    Image For 50 Rounds Of 185 Grain BEB Boxer Brass 45 Auto Winchester Ammunition
    $33.00 Price

    Qty:

    • 50 Rounds
    • Made by Winchester

    • New Condition
    • 50 Rounds
    • Made by Winchester
    • American-made Range
    • 66¢ Cost Per Round
    • Winchester SKU WC451
    • UPC 020892211681
  30. Remington 45 Auto +P Ammo - 25 Rounds of 185 Grain JHP Ammunition

    50 In stock now

    Submit A Review

    Image For 25 Rounds Of 185 Grain JHP Boxer Nickel-Plated Brass 45 Auto Remington Ammunition
    $16.75 Price

    Qty:

    • 25 Rounds
    • Made by Remington

    • New Condition
    • 25 Rounds
    • Made by Remington
    • American-made Self-Defense
    • 67¢ Cost Per Round
    • Remington SKU GS45APC
    • UPC 047700169705
  31. Federal 45 Auto Ammo - 50 Rounds of 230 Grain JHP Ammunition

    13 In stock now

    Submit A Review

    Image For 50 Rounds Of 230 Grain JHP Boxer Nickel-Plated Brass 45 Auto Federal Ammunition
    $33.99 Price

    Qty:

    • 50 Rounds
    • Made by Federal

    • New Condition
    • 50 Rounds
    • Made by Federal
    • American-made Self-Defense
    • 68¢ Cost Per Round
    • Federal SKU P45HS1G
    • UPC 029465088651
  32. Federal 45 Auto Ammo - 50 Rounds of 185 Grain FMJ-Semi Wadcutter Ammunition

    44 In stock now

    Submit A Review

    Image For 50 Rounds Of 185 Grain Semi-Wadcutter Boxer Brass 45 Auto Federal Ammunition
    $34.00 Price

    Qty:

    • 50 Rounds
    • Made by Federal

    • New Condition
    • 50 Rounds
    • Made by Federal
    • American-made Range
    • 185 Grain
    • Semi-Wadcutter Bullet
    • Brass Casing
    • Boxer Primer
    • 68¢ Cost Per Round
    • Federal SKU GM45B
    • UPC 029465089375
  33. Remington Golden Saber Bonded 45 Auto Ammo - 500 Rounds of 230 Grain JHP Ammunition

    11 In stock now

    Submit A Review

    Image For 500 Rounds Of 230 Grain JHP Boxer Nickel-Plated Brass 45 Auto Remington Ammunition
    $344.99 Price

    Qty:

    • 500 Rounds
    • Made by Remington

    • New Condition
    • 500 Rounds
    • Made by Remington
    • American-made Self-Defense
    • 69¢ Cost Per Round
    • Remington SKU GSB45APB
    • UPC 047700397719
  34. Federal 45 Auto Ammo - 50 Rounds of 230 Grain TMJ Ammunition

    8 In stock now

    Submit A Review

    Image For 50 Rounds Of 230 Grain TMJ Boxer Brass 45 Auto Federal Ammunition
    $35.00 Price

    Qty:

    • 50 Rounds
    • Made by Federal

    • New Condition
    • 50 Rounds
    • Made by Federal
    • American-made Discount Range
    • 70¢ Cost Per Round
    • Federal SKU AE45N1
    • UPC 029465093563
  35. Remington Golden Saber Bonded 45 Auto Ammo - 50 Rounds of 230 Grain JHP Ammunition

    52 In stock now

    Submit A Review

    Image For 50 Rounds Of 230 Grain JHP Boxer Nickel-Plated Brass 45 Auto Remington Ammunition
    $36.50 Price

    Qty:

    • 50 Rounds
    • Made by Remington

    • New Condition
    • 50 Rounds
    • Made by Remington
    • American-made Self-Defense
    • 73¢ Cost Per Round
    • Remington SKU GSB45APB
    • UPC 047700397702
  36. Remington 45 Auto Ammo - 25 Rounds of 230 Grain JHP Ammunition

    23 In stock now
    Image For 25 Rounds Of 230 Grain JHP Boxer Nickel-Plated Brass 45 Auto Remington Ammunition
    $18.50 Price

    Qty:

    • 25 Rounds
    • Made by Remington

    • New Condition
    • 25 Rounds
    • Made by Remington
    • American-made Self-Defense
    • 74¢ Cost Per Round
    • Remington SKU GS45APB
    • UPC 047700079707
  37. Black Hills Ammunition 45 Auto Ammo - 20 Rounds of 200 Grain Semi-Wadcutter Ammunition

    41 In stock now

    Submit A Review

    Image For 20 Rounds Of 200 Grain Semi-Wadcutter Boxer Brass 45 Auto Black Hills Ammunition Ammunition
    $14.99 Price

    Qty:

    • 20 Rounds
    • Made by Black Hills Ammunition

    • New Condition
    • 20 Rounds
    • Made by Black Hills Ammunition
    • American-made Range
    • 200 Grain
    • Semi-Wadcutter Bullet
    • Brass Casing
    • Boxer Primer
    • 75¢ Cost Per Round
    • Black Hills Ammunition SKU D45N120
    • UPC 612710128624
  38. Federal 45 Auto Ammo - 20 Rounds of 230 Grain JHP Ammunition

    55 In stock now

    Submit A Review

    Image For 20 Rounds Of 230 Grain JHP Boxer Brass 45 Auto Federal Ammunition
    $14.99 Price

    Qty:

    • 20 Rounds
    • Made by Federal

    • New Condition
    • 20 Rounds
    • Made by Federal
    • American-made Self-Defense
    • 75¢ Cost Per Round
    • Federal SKU C45D
    • UPC 029465093143
  39. Hornady 45 Auto Ammo - 20 Rounds of 185 Grain JHP Ammunition

    28 In stock now

    Submit A Review

    Image For 20 Rounds Of 185 Grain JHP Boxer Brass 45 Auto Hornady Ammunition
    $15.15 Price

    Qty:

    • 20 Rounds
    • Made by Hornady

    • New Condition
    • 20 Rounds
    • Made by Hornady
    • American-made Self-Defense
    • 75.8¢ Cost Per Round
    • Hornady SKU 90904
    • UPC 090255909043
  40. Remington 45 Auto Ammo - 500 Rounds of 230 Grain JHP Ammunition

    7 In stock now

    Submit A Review

    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
Set Descending Direction
Page:
  1. 1
  2. 2
  3. 3
per page

Designed by an American, made in America, and created for the United States Armed Forces – nothing encompasses the American spirit of ammunition like the .45 Auto caliber and the gun it was made for. Known as the .45 ACP, this cartridge is the all-American bullet. And over 100 years after its debut, it’s still used by both law enforcement and civilians, and remains a favorite across the U.S.

What is .45 ACP Ammo?

The .45 Automatic Colt Pistol (ACP), also known as the .45 Auto, is a caliber of ammunition designed by John Moses Browning in 1905. The standard ammo design holds a 230 grain (gr) lead bullet that travels at an impressive 830 feet per second (fps).

The bullet in the .45 Auto cartridge measures 11.43 x 23mm, with a bullet diameter of .451 inch. Its casing features a slight taper – from the casing’s rim to its mouth, there’s a .003 inch difference.

Used in the military, by law enforcement, by civilians for personal protection, and as a first-class match cartridge, the .45 ACP gives its shooter an ammunition that’s accurate and has excellent stopping power. While it can take some practice to become effective with these rounds, it often becomes a favorite to shoot.

Development of the .45 ACP

When Browning created the .45 Auto, he was looking for a replacement for the "less than stellar" .38 Long Colt cartridge for the U.S. military. The U.S. Cavalry had determined that they lacked an efficient and effective bullet and that the cailbers they currently had available did not pose big enough threats to their enemies.

Army weaponry at the time included the 1860 Colt Army and the 1873 Single Action Army, but the .44 ball and .454 flat-tipped bullets didn’t expand or create the ideal damage. After field testing a number of calibers in 1904, it was determined that nothing less than a .45 bullet would have the stopping power the military was looking for. Military stipulations also included a firearm that could hold no less than six rounds, a bullet that weighed at least 230 gr, and a trigger pull that was no less than six pounds.

In 1905, Browning introduced his first .45 ACP cartridge to the U.S. Army, along with what would become his prototype for the iconic M1911 pistol. The original 200 gr bullet traveled 900 feet per second, but Browning tested the weapon and cartridge over the next six years, making modifications until it became what it still is to this day – ammo with an increased bullet weight of 230 gr (while keeping the same powder load) and a decreased muzzle velocity of 830 feet per second. These features remained the standard load for the .45 ACP throughout its service life and into today.

The Success of the M1911 and the .45 ACP

In March of 1911, the Army set forth on the final testing to determine its new service weapon. The choices had been narrowed down to a Savage and a Colt, with casings covered in acid and sand, and each weapon firing 6,000 rounds. Of the rounds fired, the Savage had only 37 incidents. The Colt had none, and the M1911 became the official weapon of the U.S. Armed Forces.

The success of the M1911 is one of the reasons the .45 ACP cartridge rose in popularity. Over its course, the firearm and its cartridge became the longest serving pistol of any military force and it remains an icon among gun collectors and enthusiasts.

Numerous stories circulate about the role the M1911 has played in the our military history. 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. In one such act during World War I, Sergeant Alvin York used his .45 ACP to single-handedly kill six German soldiers while assaulting their machine gun emplacements, supporting the claim that the cartridge is an excellent man stopper.

Why is the .45 ACP So Popular?

The .45 ACP grew in popularity outside of the Armed Forces due to its ability to adapt to a variety of shooting applications, including sport shooting, law enforcement, and self defense. Both target shooters and backyard shooters appreciate the .45 ACP for its accuracy, mild recoil, and heavy bullet.

Law enforcement agencies have chosen the .45 ACP for its proven ability to stop dangerous aggressors. Units such as the FBI’s Hostage Rescue Team and the Los Angeles Police Department SWAT, as well as other specialized units, carry firearms chambered in the .45 Auto.

The U.S. military officially replaced the .45 ACP with the 9mm in 1985, though it continues to have 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.

As a self-defense weapon, in its basic full metal jacket (FMJ) cartridge, the non-expanding .45 Auto is heavy and penetrates deep. The large bullet diameter creates a significant wound, which can damage the central nervous system, circulatory system, and critical organs. Those looking for personal protection may also opt for specialty configurations from a variety of ammunition manufacturers including Hornady, Federal, and Magtech.

Different Types of .45 ACP Ammunition

Like other cartridges, the .45 ACP is available in a range of different types and styles. Some of the most common .45 Auto ammo includes:

  • Full metal jacket (FMJ): The FMJ cartridge features a lead bullet encased with a copper or other hard metal coating, helping the bullet keep its form until impact. People sometimes refer to these cartridges as full metal case (FMC) ammo.
  • Jacketed hollow point (JHP): The JHP also has a lead bullet encased in a hard metal, but instead of a round ball, the bullet has a hollow point inside – which makes it expand on impact, increasing its stopping power.
  • Advanced energy transfer (AET): AET ammo, also called frangible ammunition, looks like standard ammo, but when it hits its target, this bullet fragments into tiny pieces of composite materials (as long as the target is harder than the bullet).
  • Total metal jacket (TMJ): Much like the FMJ, the TMJ features a bullet completely covered in a hard metal. The difference between the two is that FMJ ammo exposes a small amount of lead at the base of the bullet, but TMJ completely covers the bullet – minimizing the shooter’s lead exposure.

What Are Some Popular .45 ACP Pistols?

While .45 ACP ammo is popular, the guns that fire this ammunition make it so. The Colt M1911 was the first of many .45 caliber pistols that American law enforcement, special forces, and civilians flocked to. Other popular .45 caliber firearms include:

Beyond these semi-automatic pistols, multiple submachine guns have been chambered for the .45 ACP. Reising designed and manufactured a .45 Auto semi-automatic rifle in the 1940s.

What are .45 ACP Ballistics?

The .45 ACP cartridge packs more energy than the 9mm and .40 S&W. It’s powerful, yet accurate and controllable. With a low pressure and full powder burn, the round gives its shooter a softer recoil than the other high-bore cartridges like the .357 Magnum and .50 Action Express.

Averaging across brands and specifications, the .45 ACP ballistic performance is rather impressive:

  • BULLET WEIGHT: 230 gr FMJ – VELOCITY: 835 fps – ENERGY: 356 foot-pound force (ft·lbf)
  • BULLET WEIGHT: 185 gr JHP – VELOCITY: 1,100 fps – ENERGY: 497 ft·lbf
  • BULLET WEIGHT: 165 gr JHP – VELOCITY: 1,060 fps – ENERGY: 412 ft·lbf
  • BULLET WEIGHT: 145 gr +P – VELOCITY: 1,350 fps – ENERGY: 587 ft·lbf

Popular .45 ACP Ammo Manufacturers

A wide range of ammunition manufacturers make .45 ACP ammunition. Popular brands include:

Are There Other Types of .45 Caliber Ammo?

While .45 ACP ammunition is by far the most popular .45 caliber, there are other ammunitions that have been made with this size bullet. Some of the most common calibers are:

  • .45 Colt: The .45 Colt ammunition was designed for the 1873 Peacemaker single-action revolver. A heavy, fast-moving bullet at 255 gr and 900+ fps, this cartridge was vital in settling and civilizing the American West.
  • .45 S&W (Schofield): Designed for the 1875 Smith & Wesson Schofield revolver, this chamber was used heavily during the turn of the century and may have been used by General Custer at the Battle of Little Bighorn. While .45 S&W ammo can be used in most Colt .45 revolvers, .45 Colt ammo should not be used in .45 S&W pistols.
  • .45 Automatic Rimmed (Auto Rim): Because the .45 ACP casing is rimless, it requires a half-moon clip. To solve this problem, a rimmed version, the .45 Auto Rim, was created. While it never caught on in mainstream popularity, those who prefer remanufactured ammunition and .45 caliber for hunting may use it.
  • .45 Glock Auto Pistol (GAP): The .45 GAP is made exclusively for Glock 37s, 38s, and 39s. These cartridges are one-eighth inch shorter than standard .45 ACP ammo, but feature the same performance. This smaller casing allows for a narrow magazine and smaller firearm frame and grip. Along with the pistols chambered for .45 GAP, Glock also offers multiple gun models chambered in .45 ACP.
  • .45 Automatic Short (HP): In some countries, including Italy, France, and Mexico, citizens are not allowed to carry firearms chambered in a military cartridge – which makes any .45 ACP gun illegal. To get around this, the .45 HP has a casing that is 1mm shorter than the standard .45 Auto. Most .45 ACP pistols can be converted to a .45 HP by replacing the standard barrel with a shorter one.
  • .45 Automatic Match: While .45 Automatic Match ammunition features the same chambering and dimensions of .45 ACP ammo, it has a smaller casing with a reduced powder load. These rounds are accurate and used in bullseye target shooting.
  • .45 ABC Mi-Bullet: Created by Advanced Ballistics Concepts, LLC (ABC), the multiple-impact (Mi) bullet is a multi-part ammunition that increases the shooter’s hit probability in a self-defense situation. Featuring a bullet that divides into pieces tethered together like a web, it provides multiple strike points and up to a 10-inch impact diameter.

.45 ACP vs. 9mm Ammunition

For personal defense, law enforcement, and overall efficiency, the battle between .45 ACP and 9mm Luger (or Parabellum) remains intense. While each side has valid points, it should be noted that with practice, both calibers are lethal.

In May 2014, the FBI released a report on their decision to opt for the 9mm over other caliber options, including the .45 ACP. Because of modern ballistic technology, the 9mm’s small cartridge and bullet size didn’t have as large an impact on penetration and stopping power as they had in the past. With today’s ammunition, the 9mm cartridge has grown into a deadly caliber that offers some benefits over the classic .45 Auto.

When all things are factored in, including the cost of ammunition, magazine capacities, and the impact of recoil, many shooters are faster and more accurate with a 9mm than larger caliber cartridges. Yet the .45 ACP offers accuracy and precision that sport shooters have chosen for years.

The unparalleled accuracy, reliability, and carry capacity of a practiced .45 ACP pistol can’t compare to other pistols. Once a shooter gets comfortable with the .45 ACP, it quickly becomes their go-to caliber. After more than a century of use, the .45 ACP is a cartridge that has been modified and studied extensively, and is still used all over the world. Today, it remains one of the most prized cartridges on the market and can be found in gun cabinets across the country.

  • Click To Purchase This 45 Auto Federal Ammunition
    based on the 1 review below
  • Dieased Vigilante said:

    "I just bought a S&W 1911 E series 41/4" and took it with a box of The Federal 230 HP to the range. At 8 paces, I shot a consistent 4" 7 round group. First time shooting a 45 and with this ammo. I am very certain that the consitancy of this ammo was top notch. I was a big fan of 9mm, but I now have a new love for 45's, after all they are bigger than 40's. I wish I had bought more."

  • Click To Purchase This 45 Auto Remington Ammunition
    based on the 2 reviews below
  • CHUCKCHUCK555 said:

    "185 Grain MC Ammunition,, Is a nice light load and fun to shoot,, Yes you can get FMJ 230 grain bullets for less money but once you shoot the 185gr or the 165gr the recoil is much less intimidated and can hold on target should you need Or want a follow up shot"

  • RobR said:

    "This was my first order and I was surprised it was delivered so fast. I was also surprised they had what I wanted. Ammo is hard to find. I will definetly order again."

  • Click To Purchase This 45 Auto Federal Ammunition
    based on the 4 reviews below
  • Daddy d said:

    "Okay, first I will just say I ordered one thousand rounds after doing multiple different tests on this round. I found it to expand over .85" with the biggest one expanding just over an inch. Out of all the premium rounds and the generic rounds on the market for non-bonded hollow points in 45, this had the best performance every....single...time. Not to mention it has light recoil. I found its recoil to be on par with steel cased wolf or tulammo. It fed smooth in my glocks, 1911s and even in my tommy gun. I say buy it. Get it and thank ammo.com for this terrific product. I sure do"

  • Sr. said:

    "AA++ Thank You for the fast service. "

  • Robert said:

    "The price and availability are only issues right now. Good ammo."

  • Practice said:

    "Shot 14 rounds so far to verify cycling. No issues. Will consider this for a carry round. Market is hard and expensive right now."

  • View 1 more
  • Close
  • Click To Purchase This 45 Auto Remington Ammunition
    based on the 4 reviews below
  • sarge said:

    "I have used this in my Glock 21 for duty and it has always performed outstanding, great ammo!"

  • Ron G. said:

    "The ammo worked perfectly in my Remington R1S. Shipping costs hurt a bit."

  • Rick Frank R said:

    "This is no doubt a very good quality ammo. It is also accurate, that is according to the shooter."

  • Dasol said:

    "I think the ammo is great! just a bit expensive cuz of handling"

  • View 1 more
  • Close
Page:
  1. 1
  2. 2
  3. 3