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.45 Automatic Colt Pistol

In Stock .45 ACP Auto Ammo For Sale. Compare Prices From Top Ammo Vendors

The .45 Automatic Colt Pistol (ACP), also known as the .45 Auto, is the 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).

45 ammo is still widely used by law enforcement, special forces, and other agencies around the world and is manufactured by some trusted companies because of it. Federal, Fiocchi, Wolf, Remington, Blazer Brass, PMC, Magtech, and others.


About .45 ACP/Auto

  • Type:  Pistol
  • Place of origin United States
  • Designer: John Browning
  • Designed: 1904
  • Produced: 1905–present
  • Variants: .45 ACP +P, .45 Auto Rim, .45 Super


  • Case type: Rimless, straight
  • Bullet diameter: .451 in (11.5 mm)
  • Neck diameter: .473 in (12.0 mm)
  • Base diameter: .476 in (12.1 mm)
  • Rim diameter: .480 in (12.2 mm)
  • im thickness: .049 in (1.2 mm)
  • Case length: .898 in (22.8 mm)
  • Overall length: 1.275 (32.4 mm)
  • Case capacity: 26.7 gr H2O (1.73 cm3)
  • Rifling twist: 1 in 16 in (406 mm)
  • Primer type: Large (some makers are now using Small) Pistol
  • Maximum pressure: (C.I.P.) 19,000 psi (130 MPa)
  • Maximum pressure: (SAAMI) 21,000 psi (140 MPa)

Ballistic performance

Bullet mass/type Velocity Energy
230 gr (15 g) FMJ, Winchester 835 ft/s (255 m/s) 356 ft⋅lbf (483 J)
165 gr (11 g) Hydra-shok, Federal 1,060 ft/s (320 m/s) 412 ft⋅lbf (559 J)
230 gr (15 g) FMJ, Double Tap 960 ft/s (290 m/s) 471 ft⋅lbf (639 J)
185 gr (12 g) JHP, Underwood 1,100 ft/s (340 m/s) 497 ft⋅lbf (674 J)
145 gr (9 g) Glaser +P, Cor-Bon 1,350 ft/s (410 m/s) 587 ft⋅lbf (796 J)

Browse from a wide variety of cheap 45 ACP ammo. 45 ACP ammo deals listed from top ammo vendors. Bulk Cheap Ammo offers you in-stock ammo deals from various ammo retailers in one place.

Whether you are buying 45 ACP ammunition for target shooting or personal protection 45 ammo, we have it all from the top ammo vendors you trust.

We have listed the 45 ammo from top brands ammo manufacturers such as Federal, Remington, Winchester, Hornady, PMC and others.

Visit your favorite ammo retailer, compare price & choose the product on the best price.

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