40 Cal (S&W) Ammo

The .40 Smith & Wesson is a leading cartridge among law enforcement organizations in America, and is often seen as a compromise between the capacity of the 9mm and the power of the .45. It is also popular among civilians for personal protection and sport shooting. Learn More

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  1. Magtech 40 Cal Ammo - 50 Rounds of 160 Grain Semi-Wadcutter Ammunition

    24 In stock now

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    Image For 50 Rounds Of 160 Grain LSWC Boxer Brass 40 Cal Magtech Ammunition
    $25.00 Price

    Qty:

    • 50 Rounds
    • Made by Magtech

    • New Condition
    • 50 Rounds
    • Made by Magtech
    • Foreign Discount Range
    • 50¢ Cost Per Round
    • Magtech SKU 40C
    • UPC 754908165315
  2. Federal 40 cal Ammo - 1000 Rounds of 165 Grain JHP Ammunition

    2 In stock now

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    Image For 1000 Rounds Of 165 Grain JHP Boxer Nickel-Plated Brass 40 Cal Federal Ammunition
    $499.99 Price

    Qty:

    • 1000 Rounds
    • Made by Federal

    • New Condition
    • 1000 Rounds
    • Made by Federal
    • American-made Self-Defense
    • 50¢ Cost Per Round
    • Federal SKU P40HST3
    • UPC 50029465094473
  3. Federal 40 cal Ammo - 50 Rounds of 165 Grain HST JHP Ammunition

    40 In stock now
    Image For 50 Rounds Of 165 Grain JHP Boxer Nickel-Plated Brass 40 Cal Federal Ammunition
    $27.50 Price

    Qty:

    • 50 Rounds
    • Made by Federal

    • New Condition
    • 50 Rounds
    • Made by Federal
    • American-made Self-Defense
    • 55¢ Cost Per Round
    • Federal SKU P40HST3
    • UPC 029465094478
  4. Magtech 40 cal Ammo - 50 Rounds of 180 Grain JHP Ammunition

    16 In stock now

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    Image For 50 Rounds Of 180 Grain JHP Boxer Brass 40 Cal Magtech Ammunition
    $27.75 Price

    Qty:

    • 50 Rounds
    • Made by Magtech

    • New Condition
    • 50 Rounds
    • Made by Magtech
    • Foreign Discount Range
    • 55.5¢ Cost Per Round
    • Magtech SKU 40A
    • UPC 0754908118014
  5. PMC 40 cal Ammo - 20 Rounds of 180 Grain JHP Ammunition

    54 In stock now

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    Image For 20 Rounds Of 180 Grain JHP Boxer Brass 40 Cal PMC Ammunition
    $11.50 Price

    Qty:

    • 20 Rounds
    • Made by PMC

    • New Condition
    • 20 Rounds
    • Made by PMC
    • Foreign Discount Defense
    • 57.5¢ Cost Per Round
    • PMC SKU 40SFA
    • UPC 741569010191
  6. Corbon Performance Match 40 Cal Ammo - 50 Rounds of 165 Grain FMJ Ammunition

    39 In stock now

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    Image For 50 Rounds Of 165 Grain FMJ Boxer Brass 40 Cal Corbon Ammunition
    $29.95 Price

    Qty:

    • 50 Rounds
    • Made by Corbon

    • New Condition
    • 50 Rounds
    • Made by Corbon
    • American-made Range
    • 59.9¢ Cost Per Round
    • Corbon SKU PM40165/50
    • UPC 757750401600
  7. Speer 40 Cal Ammo - 1000 Rounds of 180 Grain JHP Ammunition

    1 In stock now

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    Image For 1000 Rounds Of 180 Grain JHP Boxer Nickel-Plated Brass 40 Cal Speer Ammunition
    $600.00 Price

    Qty:

    • 1000 Rounds
    • Made by Speer

    • New Condition
    • 1000 Rounds
    • Made by Speer
    • American-made Self-Defense
    • 60¢ Cost Per Round
    • Speer SKU 53962
    • UPC 10076683539622
  8. Remington 40 Cal Ammo - 50 Rounds of 180 Grain JHP Ammunition

    14 In stock now

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    Image For 50 Rounds Of 180 Grain JHP Boxer Nickel-Plated Brass 40 Cal Remington Ammunition
    $30.00 Price

    Qty:

    • 50 Rounds
    • Made by Remington

    • New Condition
    • 50 Rounds
    • Made by Remington
    • American-made Self-Defense
    • 60¢ Cost Per Round
    • Remington SKU GSN40SWBB
    • UPC 047700418902
  9. Speer 40 cal Ammo - 50 Rounds of 180 Grain JHP Ammunition

    11 In stock now

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    Image For 50 Rounds Of 180 Grain JHP Boxer Nickel-Plated Brass 40 Cal Speer Ammunition
    $34.75 Price

    Qty:

    • 50 Rounds
    • Made by Speer

    • New Condition
    • 50 Rounds
    • Made by Speer
    • American-made Self-Defense
    • 69.5¢ Cost Per Round
    • Speer SKU 53962
    • UPC 076683539625
  10. Federal Hydra Shok 40 Cal Ammo - 500 Rounds of 180 Grain JHP Ammunition

    11 In stock now

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    Image For 500 Rounds Of 180 Grain JHP Boxer Nickel-Plated Brass 40 Cal Federal Ammunition
    $349.00 Price

    Qty:

    • 500 Rounds
    • Made by Federal

    • New Condition
    • 500 Rounds
    • Made by Federal
    • American-made Self-Defense
    • 69.8¢ Cost Per Round
    • Federal SKU P40HS1
    • UPC 50029465088601
  11. Magtech 40 cal Ammo - 20 Rounds of 180 Grain JHP Ammunition

    17 In stock now

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    Image For 20 Rounds Of 180 Grain JHP Boxer Brass 40 Cal Magtech Ammunition
    $13.99 Price

    Qty:

    • 20 Rounds
    • Made by Magtech

    • New Condition
    • 20 Rounds
    • Made by Magtech
    • Foreign-made Self-Defense
    • 70¢ Cost Per Round
    • Magtech SKU GG40B
    • UPC 754908175512
  12. SinterFire 40 Cal Ammo - 20 Rounds of 125 Grain Frang. Ammunition

    26 In stock now

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    Image For 20 Rounds Of 125 Grain JHP Boxer Brass 40 Cal SinterFire Ammunition
    $13.99 Price

    Qty:

    • 20 Rounds
    • Made by SinterFire

    • New Condition
    • 20 Rounds
    • Made by SinterFire
    • American-made Discount Defense
    • 70¢ Cost Per Round
    • SinterFire SKU SF40125SD
    • UPC 856086004599
  13. Magtech First Defense 40 cal Ammo - 20 Rounds of 130 Grain SCHP Ammunition

    45 In stock now

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    Image For 20 Rounds Of 130 Grain JHP Boxer Nickel-Plated Brass 40 Cal Magtech Ammunition
    $15.50 Price

    Qty:

    • 20 Rounds
    • Made by Magtech

    • New Condition
    • 20 Rounds
    • Made by Magtech
    • Foreign-made Self-Defense
    • 77.5¢ Cost Per Round
    • Magtech SKU FD40A
    • UPC 754908184415
  14. Hornady 40 Cal Ammo - 200 Rounds of 155 Grain JHP Ammunition

    4 In stock now

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    Image For 200 Rounds Of 155 Grain JHP Boxer Brass 40 Cal Hornady Ammunition
    $160.99 Price

    Qty:

    • 200 Rounds
    • Made by Hornady

    • New Condition
    • 200 Rounds
    • Made by Hornady
    • American-made Self-Defense
    • 80.5¢ Cost Per Round
    • Hornady SKU 9132
    • UPC 10090255391326
  15. Hornady 40 Cal Ammo - 200 Rounds of 180 Grain JHP Ammunition

    4 In stock now

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    Image For 200 Rounds Of 180 Grain JHP Boxer Brass 40 Cal Hornady Ammunition
    $164.99 Price

    Qty:

    • 200 Rounds
    • Made by Hornady

    • New Condition
    • 200 Rounds
    • Made by Hornady
    • American-made Self-Defense
    • 82.5¢ Cost Per Round
    • Hornady SKU 9136
    • UPC 10090255391364
  16. Federal Premium 40 cal Ammo - 20 Rounds of 180 Grain JHP Hydra Shok Ammunition

    42 In stock now

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    Image For 20 Rounds Of 180 Grain JHP Boxer Nickel-Plated Brass 40 Cal Federal Ammunition
    $16.99 Price

    Qty:

    • 20 Rounds
    • Made by Federal

    • New Condition
    • 20 Rounds
    • Made by Federal
    • American-made Self-Defense
    • 85¢ Cost Per Round
    • Federal SKU P40HS1
    • UPC 029465088606
  17. Hornady 40 cal Ammo - 20 Rounds of 180 Grain JHP Ammunition

    3 In stock now

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    Image For 20 Rounds Of 180 Grain JHP Boxer Brass 40 Cal Hornady Ammunition
    $17.49 Price

    Qty:

    • 20 Rounds
    • Made by Hornady

    • New Condition
    • 20 Rounds
    • Made by Hornady
    • American-made Self-Defense
    • 87.5¢ Cost Per Round
    • Hornady SKU 9136
    • UPC 090255391367
  18. Hornady 40 cal Ammo - 20 Rounds of 155 Grain JHP Ammunition

    13 In stock now

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    Image For 20 Rounds Of 155 Grain JHP Boxer Brass 40 Cal Hornady Ammunition
    $17.49 Price

    Qty:

    • 20 Rounds
    • Made by Hornady

    • New Condition
    • 20 Rounds
    • Made by Hornady
    • American-made Self-Defense
    • 87.5¢ Cost Per Round
    • Hornady SKU 9132
    • UPC 090255391329
  19. Hornady American Gunner 40 Cal Ammo - 20 Rounds of 180 Grain JHP Ammunition

    47 In stock now

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    Image For 20 Rounds Of 180 Grain JHP Boxer Brass 40 Cal Hornady Ammunition
    $18.00 Price

    Qty:

    • 20 Rounds
    • Made by Hornady

    • New Condition
    • 20 Rounds
    • Made by Hornady
    • American-made Self-Defense
    • 90¢ Cost Per Round
    • Hornady SKU 91364
    • UPC 090255913644
  20. Winchester Super Clean 40 Cal Ammo - 50 Rounds of 140 Grain FMJ Ammunition

    36 In stock now

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    Image For 50 Rounds Of 140 Grain Flat-Point Solids Boxer Brass 40 Cal Winchester Ammunition
    $45.00 Price

    Qty:

    • 50 Rounds
    • Made by Winchester

    • New Condition
    • 50 Rounds
    • Made by Winchester
    • American-made Range
    • 140 Grain
    • Flat-Point Solids Bullet
    • Brass Casing
    • Boxer Primer
    • 90¢ Cost Per Round
    • Winchester SKU SC40NT
    • UPC 020892211216
  21. Magtech 40 cal Ammo - 20 Rounds of 155 Grain JHP Ammunition

    49 In stock now
    Image For 20 Rounds Of 155 Grain JHP Boxer Brass 40 Cal Magtech Ammunition
    $18.50 Price

    Qty:

    • 20 Rounds
    • Made by Magtech

    • New Condition
    • 20 Rounds
    • Made by Magtech
    • Foreign-made Self-Defense
    • 92.5¢ Cost Per Round
    • Magtech SKU GG40A
    • UPC 754908174515
  22. Remington 40 cal Ammo - 500 Rounds of 165 Grain JHP Ammunition

    7 In stock now

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    Image For 500 Rounds Of 165 Grain JHP Boxer Nickel-Plated Brass 40 Cal Remington Ammunition
    $479.99 Price

    Qty:

    • 500 Rounds
    • Made by Remington

    • New Condition
    • 500 Rounds
    • Made by Remington
    • American-made Self-Defense
    • 96¢ Cost Per Round
    • Remington SKU GS40SWA
    • UPC 047700165622
  23. Hornady 40 Cal Ammo - 200 Rounds of 165 Grain JHP Ammunition

    12 In stock now

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    Image For 200 Rounds Of 165 Grain JHP Boxer Nickel-Plated Brass 40 Cal Hornady Ammunition
    $194.99 Price

    Qty:

    • 200 Rounds
    • Made by Hornady

    • New Condition
    • 200 Rounds
    • Made by Hornady
    • American-made Self-Defense
    • 97.5¢ Cost Per Round
    • Hornady SKU 91340
    • UPC 10090255913405
  24. Browning 40 Cal Ammo - 20 Rounds of 180 Grain JHP Ammunition

    4 In stock now

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    Image For 20 Rounds Of 180 Grain JHP Boxer Brass 40 Cal Browning Ammunition
    $19.99 Price

    Qty:

    • 20 Rounds
    • Made by Browning

    • New Condition
    • 20 Rounds
    • Made by Browning
    • American-made Self-Defense
    • 100¢ to $1.00 Cost Per Round
    • Browning SKU B191700401
    • UPC 020892222533
  25. Hornady 40 cal Ammo - 200 Rounds of 175 Grain JHP Ammunition

    9 In stock now

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    Image For 200 Rounds Of 175 Grain JHP Boxer Nickel-Plated Brass 40 Cal Hornady Ammunition
    $200.00 Price

    Qty:

    • 200 Rounds
    • Made by Hornady

    • New Condition
    • 200 Rounds
    • Made by Hornady
    • American-made Self-Defense
    • $1.00 Cost Per Round
    • Hornady SKU 91376
    • UPC 10090255913764
  26. Winchester W Train and Defend 40 Cal Ammo - 200 Rounds of 180 Grain JHP Ammunition

    2 In stock now

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    Image For 200 Rounds Of 180 Grain JHP Boxer Nickel-Plated Brass 40 Cal Winchester Ammunition
    $210.00 Price

    Qty:

    • 200 Rounds
    • Made by Winchester

    • New Condition
    • 200 Rounds
    • Made by Winchester
    • American-made Self-Defense
    • $1.05 Cost Per Round
    • Winchester SKU W40SWD
    • UPC 00020892220584
  27. Remington 40 cal Ammo - 25 Rounds of 165 Grain JHP Ammunition

    18 In stock now

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    Image For 25 Rounds Of 165 Grain JHP Boxer Nickel-Plated Brass 40 Cal Remington Ammunition
    $26.99 Price

    Qty:

    • 25 Rounds
    • Made by Remington

    • New Condition
    • 25 Rounds
    • Made by Remington
    • American-made Self-Defense
    • $1.08 Cost Per Round
    • Remington SKU GS40SWA
    • UPC 047700165608
  28. Hornady 40 cal Ammo - 20 Rounds of 165 Grain JHP Ammunition

    55 In stock now

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    Image For 20 Rounds Of 165 Grain JHP Boxer Nickel-Plated Brass 40 Cal Hornady Ammunition
    $21.99 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 91340
    • UPC 090255913408
  29. Hornady 40 cal Ammo - 20 Rounds of 175 Grain JHP Ammunition

    51 In stock now

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    Image For 20 Rounds Of 175 Grain JHP Boxer Nickel-Plated Brass 40 Cal 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 91376
    • UPC 090255913767
  30. Speer 40 cal Ammo - 20 Rounds of 180 Grain JHP Ammunition

    58 In stock now

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    Image For 20 Rounds Of 180 Grain JHP Boxer Nickel-Plated Brass 40 Cal Speer Ammunition
    $22.99 Price

    Qty:

    • 20 Rounds
    • Made by Speer

    • New Condition
    • 20 Rounds
    • Made by Speer
    • American-made Self-Defense
    • $1.15 Cost Per Round
    • Speer SKU 23974
    • UPC 076683239747
  31. Winchester 40 Cal Ammo - 20 Rounds of 180 Grain JHP Ammunition

    36 In stock now

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    Image For 20 Rounds Of 180 Grain JHP Boxer Nickel-Plated Brass 40 Cal Winchester Ammunition
    $22.99 Price

    Qty:

    • 20 Rounds
    • Made by Winchester

    • New Condition
    • 20 Rounds
    • Made by Winchester
    • American-made Self-Defense
    • $1.15 Cost Per Round
    • 925 FPS Muzzle Velocity
    • 342 FT. LBS. Muzzle Energy
    • Winchester SKU W40SWD
    • UPC 020892220577
  32. Federal 40 Cal Ammo - 20 Rounds of 180 Grain HST JHP Ammunition

    18 In stock now

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    Image For 20 Rounds Of 180 Grain JHP Boxer Nickel-Plated Brass 40 Cal Federal Ammunition
    $22.99 Price

    Qty:

    • 20 Rounds
    • Made by Federal

    • New Condition
    • 20 Rounds
    • Made by Federal
    • American-made Self-Defense
    • $1.15 Cost Per Round
    • Federal SKU P40HST1S
    • UPC 029465063931
  33. Winchester 40 cal Ammo - 20 Rounds of 180 Grain JHP Ammunition

    39 In stock now

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    Image For 20 Rounds Of 180 Grain JHP Boxer Nickel-Plated Brass 40 Cal Winchester Ammunition
    $25.00 Price

    Qty:

    • 20 Rounds
    • Made by Winchester

    • New Condition
    • 20 Rounds
    • Made by Winchester
    • American-made Self-Defense
    • $1.25 Cost Per Round
    • Winchester SKU S40SWPDB1
    • UPC 020892217874
  34. Winchester 40 cal Ammo - 20 Rounds of 165 Grain JHP Ammunition

    44 In stock now
    Image For 20 Rounds Of 165 Grain JHP Boxer Nickel-Plated Brass 40 Cal Winchester Ammunition
    $25.00 Price

    Qty:

    • 20 Rounds
    • Made by Winchester

    • New Condition
    • 20 Rounds
    • Made by Winchester
    • American-made Self-Defense
    • $1.25 Cost Per Round
    • Winchester SKU S40SWPDB
    • UPC 020892217850
  35. Speer 40 cal Ammo - 20 Rounds of 165 Grain JHP Ammunition

    35 In stock now

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    Image For 20 Rounds Of 165 Grain JHP Boxer Nickel-Plated Brass 40 Cal Speer Ammunition
    $27.00 Price

    Qty:

    • 20 Rounds
    • Made by Speer

    • New Condition
    • 20 Rounds
    • Made by Speer
    • American-made Self-Defense
    • $1.35 Cost Per Round
    • Speer SKU 23970
    • UPC 076683239709
  36. Speer 40 cal Ammo - 20 Rounds of 180 Grain JHP Ammunition

    21 In stock now

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    Image For 20 Rounds Of 180 Grain JHP Boxer Nickel-Plated Brass 40 Cal Speer Ammunition
    $27.99 Price

    Qty:

    • 20 Rounds
    • Made by Speer

    • New Condition
    • 20 Rounds
    • Made by Speer
    • American-made Self-Defense
    • $1.40 Cost Per Round
    • Speer SKU 23962
    • UPC 076683239624
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Smith & Wesson and Winchester introduced the .40 S&W in 1990, replacing the 10mm cartridge used for a short time by the Federal Bureau of Investigation. The 10mm had proven to be too difficult for many agents to control when firing, due to the combination of harsh recoil and large grip size. In response, the FBI searched for a cartridge with less recoil that fit in existing 9mm frames, and could deliver the amount of penetration required by the FBI. The .40 S&W met these requirements, was adopted by the FBI, and was enthusiastically embraced by the law enforcement community. Civilians soon followed, offering their own endorsement of the caliber.

A strong feature of this ammunition is that it is a "middle ground cartridge," yet it avoids being a compromise. The .40 S&W has more muzzle energy and down-range energy than a 9mm, although the same sized pistol in 9mm will be able to hold more rounds since the 9mm cartridge is smaller. A pistol chambered in .40 can hold more rounds than it could with .45 ACP, but the muzzle energy of the .45 is considerably higher than that of a .40. The .40 strikes the right balance between muzzle energies and magazine capacity, and has been approved by exhaustive testing on the part of the FBI and many other agencies – resulting in widespread adoption of the .40 among the police community. It is also worth noting that the .40 S&W has been adopted by the U.S. Coast Guard as its primary issue sidearm.

The .40 is popular with civilians for many reasons. A wide variety of options exist for bullet weight and bullet design, and if a manufacturer produces a new line of self-defense firearms, they are sure to offer it in .40 caliber. Civilians appreciate the same benefits of the caliber that made it so popular with law enforcement: magazine capacity, muzzle energy and limited recoil. The cartridge is popular for home defense and concealed carry, as seen in the number of pistols chambered in .40 S&W of compact and sub-compact size. Defensive ammunition in .40 S&W is offered by several manufacturers including Federal, Hornady and Magtech – just to name a few.

  • Click To Purchase This 40 Cal MBI Ammunition
    based on the 1 review below
  • Scott said:

    "I purchased 300 rounds of this ammo to break in my Kahr mk40, I put 80 rounds thru it fresh out of the box and never fired, even though this ammo was reloads w/ mixed brass I had no problems what so ever, no stove pipes, FTF or FTE and accuracy was good as long as I did my part. Would purchase again."

  • Click To Purchase This 40 Cal Federal Ammunition
    based on the 1 review below
  • Paperbanger said:

    " Looking for some .40 cal you can feed your pistol with total confidence? Fill your magazines with the HST JHP from Federal! My Sig and I spent an afternoon punching holes with these, along with three other brands. We know there are some brands okay for range practice, because a misfeed or misfire doesn't matter much. But it was clear from the outset that if you carry, these are the guys you want to take with you. Never a misfeed or misfire, and accurate to a gnat's eyelash. I figure if it's my life and perhaps the lives of my loved ones on the line, I'll have enough to worry about without fighting the bad guys and my ammo problems at the same time. "

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