.40 S&W Ammo
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Original price $ 27.99Original price $ 27.99 - Original price $ 27.99Original price $ 27.99Current price $ 22.99$ 22.99 - $ 22.99Current price $ 22.99| /
Hornady .40 S&W 165gr Critical Defense FTX Ammunition - 20 Round Box
HornadyOut of stockHornady's Critical Defense ammunition is loaded in nickel-plated cases for increased visibility in low-light situations. Premium low flash propella...
View full detailsOriginal price $ 27.99Original price $ 27.99 - Original price $ 27.99Original price $ 27.99Current price $ 22.99$ 22.99 - $ 22.99Current price $ 22.99| /Sold out -
Original price $ 29.99 - Original price $ 29.99Original price$ 29.99$ 29.99 - $ 29.99Current price $ 29.99| /
Browning BXP .40 S&W 180gr X-Point Jacketed Hollow Point Ammunition - 20 Round Box (Limited Supply)
Browning AmmoOut of stockBrowning, a longstanding name in the American shooting tradition, has licensed this new line of ammunition for carry and defense applications. Thes...
View full detailsOriginal price $ 29.99 - Original price $ 29.99Original price$ 29.99$ 29.99 - $ 29.99Current price $ 29.99| /Sold out -
Original price $ 41.99Original price $ 41.99 - Original price $ 41.99Original price $ 41.99Current price $ 34.99$ 34.99 - $ 34.99Current price $ 34.99| /
Underwood .40 S&W 115gr. Xtreme Defender Solid Monolithic Hunting & Self Defense Ammunition - 20 Round Box
UnderwoodOut of stockThe Xtreme Defender is based on the Xtreme Defense Fluid Transfer Monolithic (FTM®) family of projectiles. The EXD projectile has optimized flute g...
View full detailsOriginal price $ 41.99Original price $ 41.99 - Original price $ 41.99Original price $ 41.99Current price $ 34.99$ 34.99 - $ 34.99Current price $ 34.99| /Sold out -
Original price $ 42.99Original price $ 42.99 - Original price $ 42.99Original price $ 42.99Current price $ 33.99$ 33.99 - $ 33.99Current price $ 33.99| /
Underwood .40 S&W 100gr. Xtreme Defender Solid Monolithic Hunting & Self Defense Ammunition - 20 Round Box
UnderwoodOut of stockThe Xtreme Defender is based on the Xtreme Defense Fluid Transfer Monolithic (FTM®) family of projectiles. The EXD projectile has optimized flute g...
View full detailsOriginal price $ 42.99Original price $ 42.99 - Original price $ 42.99Original price $ 42.99Current price $ 33.99$ 33.99 - $ 33.99Current price $ 33.99| /Sold out -
Original price $ 27.99 - Original price $ 27.99Original price$ 27.99$ 27.99 - $ 27.99Current price $ 27.99| /
Underwood .40 S&W 140gr. Maximum Expansion® Solid Monolithic Hunting & Self Defense Ammunition - 20 Round Box
UnderwoodOut of stockLehigh's Maximum Expansion™ Technology is used to produce projectiles that create the largest wound channels of any bullet you can buy. These caver...
View full detailsOriginal price $ 27.99 - Original price $ 27.99Original price$ 27.99$ 27.99 - $ 27.99Current price $ 27.99| /Sold out -
Original price $ 31.99 - Original price $ 31.99Original price$ 31.99$ 31.99 - $ 31.99Current price $ 31.99| /
Inceptor .40 S&W ARX Ammunition - 20 Round Box
InceptorOut of stockThe .40 S&W Inceptor ARX® is a revolutionary bullet in every sense of the word. From the way it’s manufactured, to its shape, to the way it ...
View full detailsOriginal price $ 31.99 - Original price $ 31.99Original price$ 31.99$ 31.99 - $ 31.99Current price $ 31.99| /Sold out -
Original price $ 32.00 - Original price $ 32.00Original price$ 32.00$ 32.00 - $ 32.00Current price $ 32.00| /
TB Ammunition: 40 S&W GPM ft. Quadra-Shock™ Technology
TB AmmunitionOut of stockAnnouncing the new lead-free, high-performance GPM Quadra-Shock™ ammunition! GPM Quadra-Shock™ offers all the performance of existing non-frangible...
View full detailsOriginal price $ 32.00 - Original price $ 32.00Original price$ 32.00$ 32.00 - $ 32.00Current price $ 32.00| /Sold out -
Original price $ 19.99 - Original price $ 19.99Original price$ 19.99$ 19.99 - $ 19.99Current price $ 19.99| /
ICC .40 S&W Duty & Defense Ammunition - 20 Round Box
ICCOut of stockICC Duty & Defense Ammunition meets and exceeds the FBI protocol. Upon impact, it is designed to deliver the maximum payload possible in a 360 ...
View full detailsOriginal price $ 19.99 - Original price $ 19.99Original price$ 19.99$ 19.99 - $ 19.99Current price $ 19.99| /Sold out -
Original price $ 12.99 - Original price $ 12.99Original price$ 12.99$ 12.99 - $ 12.99Current price $ 12.99| /
DRT .40 S&W 105gr Terminal Shock Hollow Point Ammunition - 20 Round Box
DRTOut of stockDynamic Research Technologies' .40 S&W Terminal Shock Ammo's light 105 grain bullet ensures quicker follow up shots due to light recoil without...
View full detailsOriginal price $ 12.99 - Original price $ 12.99Original price$ 12.99$ 12.99 - $ 12.99Current price $ 12.99| /Sold out
.40 S&W Ammo
The .40 S&W cartridge traces its roots back to the 1990s when Smith & Wesson and Winchester combined efforts to produce a cartridge intended to fill the gap between the 9mm Luger and the .45 ACP. The .40 S&W was specifically built for law enforcement with the same bullet diameter as the 10mm (.400 inches) on a shortened case. Used widely as a side arm by law-enforcement agencies, the .40 Smith & Wesson cartridge is an effective and versatile round. It's a faster load then a .45 caliber bullet and heavier than a 9mm bullet. The bullet has very good penetrating power, and as a defensive weapon, can handle most tasks.
Browse through our selection to find the perfect box of .40 Smith and Wesson for your needs, here at Clark Armory!