40 Cal (S&W) Ammo icon

40 Cal (S&W) Ammo For Sale

Live Inventory
The .40 Smith & Wesson is a leading cartridge among law enforcement organizations in America and is also popular among civilians for personal protection and sport shooting. To shop 40 S&W ammo in bulk, check out our bulk 40 S&W ammo page. Learn More
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  1. Magtech 40 Cal Ammo - 50 Rounds of 165 Grain FMC Ammunition

    $19.99

    119 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Full Metal Jacket Flat Nose (FMJFN)
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 1050 FPS
    Muzzle Energy 404 ft lbs
    • 50 Rounds
    • 40¢ per round
    • Made by Magtech
  2. Winchester Super Clean 40 S&W Ammo - 500 Rounds of 120 Grain Lead-Free FMJ Ammunition

    $199.99

    97 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Lead Free
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 1250 FPS
    Muzzle Energy 416 ft lbs
  3. Winchester USA Ready 40 S&W Ammo - 50 Rounds of 165 Grain FMJ FN Ammunition

    $21.99

    58 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Full Metal Jacket Flat Nose (FMJFN)
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 1060 FPS
    Muzzle Energy 412 ft lbs

History of 40 Cal (S&W) Ammo

The .40 S&W cartridge was developed to provide more stopping power than the 9mm Parabellum and better handling than the .45 ACP. A team from Smith & Wesson and Winchester achieved these goals, creating a rimless, 10x22mm round with a .40-inch (10mm) bullet weighing between 105 and 200 grains (gr). This cartridge offers enough stopping power for home defense and concealed carry while being manageable for shooters of various sizes.

What are the most popular .40 cal brands you sell?

You can filter our entire selection using the left sidebar to see which brands we currently have in-stock and available using the Manufacturers filter. You can also filter by attributes such as Bullet Type, Bullet Weight, Casing Type, and Primer Type to find what you need.

Best .40 Cal Ammo for Specific Uses

Use Case Details
Best .40 S&W Ammo Best Overall: Hornady Critical Defense 165gr Runner Up: Winchester USA Ready Defense 170gr
Best .40 S&W Ammo for Self-Defense Best Overall: Speer Gold Dot 165 gr JHP Runner Up: Winchester PDX1 Defender 165 gr JHP

You can also check out our in-depth look at 40 Cal ballistics from all of the popular ammo manufacturers if you're in search of ballistics data for your favorite factory load.


Molly Carter
Written by
Molly Carter

Customer Reviews

  • Jody said:

    I would recommend this ammo to anyone having a .40 S & W pistol..I used in my new Taurus TU pistol

  • Adam said:

    I fired these rounds using my mp 40. I will definitely use these again.

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