Product SKU # :TS91340 |  MPN: 91340  | UPC # :090255913408

Hornady Ammunition 

Hornady Critical Defense 40 S&W Ammo 165 Grain Flex Tip Expanding - 91340

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Hornady Critical Defense 40 S&W Ammo 165 Grain Flex Tip Expanding - 91340
USDTargetSportsUSA24.99
Was $27.50Sale Price $24.99!
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USDTargetSportsUSA249.90
Was $275.00Sale Price $249.90!
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AVAILABLE : 7 in stock

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You must be 21 years or older to order ammunition. Ammunition must ship UPS ground. Due to safety considerations and legal/regulatory reasons, Ammunition may not be returned. Please check local laws before ordering. By ordering this Ammunition, you certify you are of legal age and satisfy all federal, state and local legal/regulatory requirements to purchase this Ammunition.

Hornady Critical Defense 40 S&W Ammunition 165 Grain Flex Tip Expanding - 91340

The Hornady Critical Defense .40 S&W Ammunition is specifically engineered for personal protection and self-defense, offering unmatched reliability and performance. Featuring a 165-grain Flex Tip Expanding (FTX) bullet, this ammunition eliminates the common issues associated with conventional hollow point bullets, such as clogging and inconsistent expansion. By incorporating a soft polymer Flex Tip, the Critical Defense round ensures controlled expansion and deep wound cavities across a wide range of velocities, delivering maximum stopping power when it matters most.

Designed for concealed carry and personal defense scenarios, this ammunition guarantees reliable expansion every time, regardless of the target. It is manufactured with non-corrosive Boxer primers and reloadable brass cases, ensuring consistent quality and performance. Each round is new production, packaged in boxes of 20 or cases of 200, making it a versatile choice for everyday carry or bulk storage. Check out all of our Hornady Ammo here!

With Hornady’s proven Flex Tip technology, adapted from their LeveRevolution line, the Critical Defense .40 S&W ammo stands as a top-tier choice for those who prioritize safety, reliability, and effectiveness in critical situations.

FTX bullets are unaffected by thick and heavy clothing, including denim and leather

Clean burning propellants reduce recoil in lightweight handguns, and perform equally in all temperatures

Features and Specifications:

  • Features: FTX bullets are unaffected by thick and heavy clothing, including denim and leather. Clean burning propellants reduce recoil in lightweight handguns, and perform equally in all temperatures.
  • Reliability and Expansion: The FTX bullet ensures consistent expansion and penetration, making it ideal for self-defense applications.
  • Performance Metrics: With a muzzle velocity of 1175 fps and muzzle energy of 506 ft. lbs, this ammunition offers significant stopping power.
  • Advanced Bullet Technology: The Flex Tip technology enhances the bullet's performance, particularly in critical defense scenarios.
  • Premium Manufacturing: Crafted in the USA with brass casing and Boxer primer, ensuring high-quality construction and reliability.
  • Versatile Use: Suitable for a range of modern handguns, providing versatility for diverse defensive needs.

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Deep Dive

Overview

The Hornady Critical Defense .40 S&W ammunition is meticulously designed for personal protection, concealed carry, and home defense. Its primary goal is to deliver dependable and consistent performance in critical situations. Featuring a 165-grain Flex Tip Expanding (FTX) bullet, this ammo ensures optimal expansion and energy transfer upon impact.

The unique polymer Flex Tip prevents the hollow point cavity from clogging when passing through thick clothing or barriers, ensuring reliable penetration and controlled expansion. The result is deep wound cavities and maximum stopping power, making it a trusted choice for self-defense scenarios.

History and Development

Hornady, established in 1949, has been at the forefront of innovation in ammunition manufacturing. The Critical Defense line was introduced to address the specific challenges faced by traditional hollow point bullets, such as inconsistent expansion when encountering barriers like heavy fabrics.

The development of Flex Tip technology revolutionized the industry, drawing on design principles from Hornady’s LeveRevolution ammunition, originally created for lever-action rifles. This soft polymer tip not only ensures consistent bullet expansion but also enhances accuracy by streamlining the projectile’s profile.

The Critical Defense .40 S&W ammunition is the culmination of years of research and refinement, designed to provide peace of mind and unparalleled performance for those who prioritize safety and reliability.

Common Questions and FAQs

  • What makes the Flex Tip Expanding (FTX) bullet unique?
    The FTX bullet features a soft polymer tip that prevents clogging in the hollow point cavity when passing through barriers like heavy clothing. This ensures reliable, controlled expansion and effective penetration, making it ideal for self-defense.
  • Is Hornady Critical Defense .40 S&W ammo suitable for concealed carry firearms?
    Yes, this ammunition is specifically designed for use in concealed carry firearms, providing reliable feeding, consistent performance, and optimal expansion even in compact handguns.
  • Can this ammunition be used in all .40 S&W firearms?
    The Hornady Critical Defense .40 S&W ammunition is compatible with all firearms chambered for .40 S&W. However, always check your firearm’s manual to ensure compatibility with specific ammunition types.
  • Is this ammunition non-corrosive?
    Yes, Hornady Critical Defense ammunition uses non-corrosive Boxer primers and clean-burning powder, which help maintain your firearm’s longevity and reduce maintenance needs.
  • How is this ammunition packaged?
    Hornady Critical Defense .40 S&W ammunition is packaged in boxes of 20 rounds. Bulk cases containing 200 rounds are also available for those who prefer to purchase in larger quantities.
  • What is the typical muzzle velocity of this ammunition?
    The Hornady Critical Defense .40 S&W 165-grain FTX ammunition has a muzzle velocity of approximately 1,175 feet per second (fps), providing a balance of speed and energy transfer for effective performance in self-defense scenarios.

The 'Round Up'

Perfect Fit for:

  • Law enforcement, personal defense, winter carry self defense rounds.

Why It Stands Out:

Hornady Critical Defense .40 S&W Ammunition is a top-tier choice for those who demand reliability, precision, and stopping power in self-defense situations. With its innovative Flex Tip Expanding (FTX) bullet, it delivers consistent expansion, deep penetration, and maximum energy transfer, even through barriers like heavy clothing. Engineered for concealed carry and personal protection, this ammunition provides peace of mind in critical moments, ensuring you’re equipped to safeguard yourself and your loved ones.

Field Details
MPN91340
UPC090255913408
ManufacturerHornady Ammo
PlatformHandgun
Ammo ApplicationPersonal Protection / Self Defense
Ammo TypeFlex Tip Expanding
Caliber40 S&W Ammo
Grain Weight165
Quantity Per PackageBox of 20 / Case of 200
Test Barrel LengthNot provided
Muzzle Velocity1175 fps
Muzzle Energy506 ft. lbs
Ballistic Coefficient (G1)Not provided
Case TypeBrass Casing
Primer TypeBoxer
CorrosiveNo
ReloadableYes
Lead FreeNo
Staked PrimerNo
Country of OriginUSA

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Attention Ammunition Buyers You must be 21 years or older to order ammunition. Ammo must ship UPS/FedEx Ground. For safety reasons, we cannot accept returns on ammo. Always, make sure that you use the correct ammunition for your gun. Please check local laws before ordering.


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Proposition 65 Warning
 This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.p65warnings.ca.gov.

Reviews

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Comments and Reviews on Hornady Critical Defense 40 S&W Ammo 165 Grain Flex Tip Expanding - 91340
Performancestarstarstarstarstar
Valuestarstarstarstarstar
Qualitystarstarstarstarstar
Good shooting 40 S&W rounds, love this ammo from Hornady Critical Defense! Thanks TSUSA!
Reviewed by Paul  V
11/29/2025 7:50:19 AM
Comments and Reviews on Hornady Critical Defense 40 S&W Ammo 165 Grain Flex Tip Expanding - 91340
Performancestarstarstarstarstar
Valuestarstarstarstarstar
Qualitystarstarstarstarstar
My SD 40 loves this ammo Fast shipping. Yearly membership is worth the value
Reviewed by Frederick  W
11/27/2025 10:00:52 AM
Comments and Reviews on Hornady Critical Defense 40 S&W Ammo 165 Grain Flex Tip Expanding - 91340
Performancestarstarstarstarstar
Valuestarstarstarstarstar
Qualitystarstarstarstarstar
My personal carry for years! No issues with this round from Hornady Critical Defense! Shipped fast from TSUSA!
Reviewed by Frederick  L
10/18/2025 5:49:31 PM
Comments and Reviews on Hornady Critical Defense 40 S&W Ammo 165 Grain Flex Tip Expanding - 91340
Performancestarstarstarstarstar
Valuestarstarstarstarstar
Qualitystarstarstarstarstar
Exactly what I needed, no issues with this 40 S&W round from Hornady Critical Defense. Shipped fast from TSUSA.
Reviewed by James  L
8/15/2025 12:08:38 PM
Comments and Reviews on Hornady Critical Defense 40 S&W Ammo 165 Grain Flex Tip Expanding - 91340
Performancestarstarstarstarstar
Valuestarstarstarstarstar
Qualitystarstarstarstarstar
Work’s well, solid 40 S&W rounds from Hornady Critical Defense. Thank you TSUSA.
Reviewed by Douglas  S
7/5/2025 6:50:05 AM

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About Hornady Ammunition

Hornady Ammunition is proudly made in the USA and built for shooters who demand accuracy and consistency. Offering a full range of handgun, rifle, and hunting loads, Hornady is known for popular lines like Critical Defense®, American Whitetail®, Frontier®, and Precision Hunter®. With advanced engineering and strict quality control, Hornady bullets deliver reliable expansion, optimal velocity, and tight groupings. Target Sports USA offers Hornady ammo for sale in bulk across top calibers like 9mm Luger ammo, .223 Rem ammo, 6.5 Creedmoor ammo, and .308 Win ammo, with free shipping.

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