.40 S&W Ammo

.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!

Ammunition - Lehigh Defense .40 S&W Controlled Fracturing Ammunition

Lehigh Defense .40 S&W Controlled Fracturing Ammunition

$ 30.00

Lehigh Defense .40 S&W Controlled Fracturing Ammunition is machined from 100% solid bar stock copper and perfect for causing maximum damage on impact.  The projectile is one piece of copper machined into a base and three fracturing "wings."  This one metal, two-part design means that upon impact, the wings break off of the base and penetra...

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Underwood 40 S&W 140 Grain Maximum Expansion

Underwood 40 S&W 140 Grain Maximum Expansion

$ 29.95

Lehigh's Maximum Expansion™ Technology is used to produce projectiles that create the largest wound channels of any bullet you can buy. These cavernous hollow points are designed to expand upon contact with a fluid-based medium through hydraulic energy. They do not expand on dry mediums like wood, drywall, bone, or sheet metal. The expansion pro...


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Ammunition - PolyCase Inceptor .40 S&W Sport Utility RNP Ammunition

PolyCase Inceptor .40 S&W Sport Utility RNP Ammunition

$ 21.99

PolyCase's Sport Utility Ammo is the reinvention of their original Inceptor RNP/TNP line. PolyCase has taken a second look at the specifications of their standard line and revamped their bullet weight, velocity and price to make an ideal "plinking" round. Just like the original RNP/TNPs, the Sport Utility rounds shoot and cycle similarly to Poly...


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Projectiles - Lehigh Defense .400 Cal (10mm, .40 S&W) Xtreme Penetrator Bullets

Lehigh Defense .400 Cal (10mm, .40 S&W) Xtreme Penetrator Bullets

$ 40.00

Lehigh Defense .400 Cal (10mm) Xtreme Penetrator Bullets are the projectiles that have rocketed Lehigh's Xtreme Penetrator Ammunition to great heights.  Featuring a 100% solid copper construction and patent-pending CNC design Xtreme Penetrators are now available for you reload to personal specifications.   This is NOT loaded ammunition. Specs:...


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Winchester .40 S&W 120gr Super Clean NT Ammunition

$ 30.99

Winchester Super Clean NT .40 S&W 120 grain Ammunition features a unique bullet constructed from a zinc core wrapped in a full copper jacket. This bullet, with the addition of lead free primers, is specifically designed for use at lead restricted ranges. This ammo is made with Winchester quality and intended to lower the cost of training for...


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Winchester .40 S&W 140gr Super Clean NT Ammunition

$ 30.99

Winchester Super Clean NT .40 S&W 140 grain Ammunition features a unique bullet constructed from a zinc core wrapped in a full copper jacket. This bullet, with the addition of lead free primers, is specifically designed for use at lead restricted ranges. This ammo is made with Winchester quality and intended to lower the cost of training for...


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Ammunition - EBR .40 S&W Frangible Ammunition

EBR .40 S&W Frangible Ammunition

$ 45.00

Engel Ballistic Research (EBR)'s Frangible .40 S&W Ammo is an excellent choice for everything from home defense, to tactical training.  These lead free frangible bullets instantly fragment in fluid and shatter upon contact with steel.  In fluid, this fragmentation causes a much larger wound channel and eliminates over penetration.  On steel,...


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Projectiles - Lehigh Defense .400 Cal (10mm, .40 S&W) Xtreme Defense Bullets

Lehigh Defense .400 Cal (10mm, .40 S&W) Xtreme Defense Bullets

$ 30.50

Lehigh Defense .400 Cal (10mm, .40 S&W) Xtreme Defense Bullets are the second generation of the extremely popular Xtreme Penetrators.  Xtreme Defense Bullets utilize a similar bullet shape to the Xtreme Penetrator, cut at a steeper angle to maximize permanent wound cavity and draw back penetration.  These projectiles pass extremely well thro...


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Projectiles - Lehigh Defense .400 Cal (10mm, .40 S&W) Controlled Fracturing Bullets

Lehigh Defense .400 Cal (10mm, .40 S&W) Controlled Fracturing Bullets

$ 42.50

Lehigh Defense .400 Cal (10mm) Controlled Fracturing Bullets are machined from 100% solid bar stock copper and perfect for causing maximum damage on impact.  These projectiles are cut from a single piece of copper machined into a base and three fracturing "wings."  This one metal, two-part design means that upon impact, the wings break off of t...


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Ammunition - SinterFire .40 S&W 125gr. Greenline (GL) Ammunition

SinterFire .40 S&W 125gr Greenline (GL) Ammunition

$ 554.00

**Please email: info@clarkarmory.com for specific quotes and availability. SinterFire GreenLine Ammunition utilizes a lead-free, high performance bullet and a lead-free primer.  Features SinterFire's industry-leading lead-free projectiles perfect for indoor or outdoor ranges and close-quarters training.  SinterFire's lead-free bullets break apar...


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Ammunition - SinterFire .40 S&W 125gr. Reduced Hazard Ammunition (RHA)

SinterFire .40 S&W 125gr Reduced Hazard Ammunition (RHA)

$ 529.00

**Please email: info@clarkarmory.com for specific quotes and availability. SinterFire .40 S&W Reduced Hazard Ammunition utilizes a lead-free, high performance bullet with a standard primer.  Features SinterFire's industry-leading lead-free projectiles perfect for indoor or outdoor ranges and close-quarters training.  SinterFire's lead-free R...


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