Description
The Hornady 40 S&W 165gr FTX Critical Defense load is built for shooters who want more from their .40 S&W than typical factory ammunition delivers. Hornady loads a 165 grain Flex Tip eXpanding to a rated 1045 feet per second, producing about 400 foot-pounds of energy. Hornady Critical Defense uses the FTX bullet, whose soft polymer tip fills the hollow point cavity to prevent clogging with heavy clothing and to initiate consistent, reliable expansion at personal-defense ranges.

Why Choose the Hornady 40 S&W 165gr FTX Critical Defense
- 165 grain Flex Tip eXpanding bullet
- Rated 1045 fps and 400 ft-lbs
- Brass cases with reliable primers
- Flex Tip prevents hollow point clogging
- 20 rounds per box, item 91340
Built for Personal Protection
- Reliable feeding in modern pistols
- Consistent expansion and penetration
- Quality brass cases and reliable primers
- Suited to concealed carry and home defense
Buying ammunition by the box from the same production lot keeps velocity and point of impact consistent from one range trip to the next. Keep a record of the load you carry, check your ammunition for dents or loose bullets from time to time, and rotate your carry rounds so the ones in your firearm stay fresh. These simple habits help you get the full performance Hornady builds into every cartridge.
Before you trust any new load, fire enough rounds through your firearm to confirm it feeds, fires and ejects reliably and that the point of impact matches your sights. Full-power loads produce more recoil and muzzle blast than typical range ammo, so practice with the Hornady 40 S&W 165gr FTX Critical Defense until you are comfortable with it, and store the rest in a cool, dry place in the original box.
The .40 S&W was introduced in 1990 by Smith and Wesson and Winchester as a shorter version of the 10mm Auto that fits in 9mm-sized pistol frames. It quickly became a leading law enforcement cartridge and is still carried by many agencies and private citizens, offering more bullet weight than the 9mm with recoil that most shooters can manage well.
Specifications
- Brand: Hornady Manufacturing
- Product Line: Critical Defense
- Caliber: .40 S&W
- Bullet Weight: 165 grains
- Bullet Type: Flex Tip eXpanding
- Muzzle Velocity: 1045 fps
- Muzzle Energy: 400 ft-lbs
- Case: Brass
- Quantity: 20 rounds
- Item Number: 91340
- UPC: 090255913408
Why Choose Hornady 40 S&W Ammo
Choosing 40 s&w defense ammo comes down to reliable feeding, dependable ignition and consistent bullet performance. This Critical Defense load from Hornady is built with those priorities in mind, using quality components that function smoothly in modern firearms.
The 40 s&w 165 grain critical defense bullet leaves the muzzle at about 1045 fps with roughly 400 ft-lbs of energy. Hornady loads it in quality brass with consistent powder charges for dependable accuracy shot to shot.
Whether you are sighting in, practicing or heading to the field, choosing a proven load like the Hornady 40 S&W 165gr FTX Critical Defense removes one more variable, so you can focus on your fundamentals and shoot with confidence every time you pull the trigger.
Hornady has designed and built bullets and ammunition in Grand Island, Nebraska since 1949, and it tests its loads in its own ballistics lab to confirm accuracy and terminal performance. Its Critical Defense line reflects that focus on consistency, and hornady 40 s&w ammo is trusted by hunters, competitors and law enforcement across the country.
Always confirm your firearm is chambered for .40 S&W, wear eye and ear protection, and follow all federal, state and local laws.
Browse more ammunition at Mag 5 Firearms, or visit Hornady Manufacturing for more about their full line of loads.









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