40 Cal (S&W) Ammo For Sale

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The .40 Smith & Wesson is a leading cartridge among law enforcement organizations in America and is also popular among civilians for personal protection and sport shooting. To shop 40 S&W ammo in bulk, check out our bulk 40 S&W ammo page. Learn More

History of 40 Cal (S&W) Ammo

The .40 S&W cartridge was developed to provide more stopping power than the 9mm Parabellum and better handling than the .45 ACP. A team from Smith & Wesson and Winchester achieved these goals, creating a rimless, 10x22mm round with a .40-inch (10mm) bullet weighing between 105 and 200 grains (gr). This cartridge offers enough stopping power for home defense and concealed carry while being manageable for shooters of various sizes.

What are the most popular .40 cal brands you sell?

You can filter our entire selection using the left sidebar to see which brands we currently have in-stock and available using the Manufacturers filter. You can also filter by attributes such as Bullet Type, Bullet Weight, Casing Type, and Primer Type to find what you need.

Best .40 Cal Ammo for Specific Uses

Use Case	Details
Best .40 S&W Ammo	Best Overall: Hornady Critical Defense 165gr Runner Up: Winchester USA Ready Defense 170gr
Best .40 S&W Ammo for Self-Defense	Best Overall: Speer Gold Dot 165 gr JHP Runner Up: Winchester PDX1 Defender 165 gr JHP

You can also check out our in-depth look at 40 Cal ballistics from all of the popular ammo manufacturers if you're in search of ballistics data for your favorite factory load.

Written by

Molly Carter

Customer Reviews

Click To Purchase This 40 Cal Blazer Brass Ammunition

Blazer 40 cal Ammo - 1000 Rounds of 180 Grain FMJ Ammunition

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Donnie said:
I am a firm believer in Blazer Brass 40 S&W. I've never experienced a jam thru my Glock 23 with this ammo and it is a very clean shooting bullet. Plus excellent service as always from Ammo.Com. Ordered on Monday, entire order here on Tuesday!!!! Thank You
Ross said:
I've used this ammo for the last few months. I've put over 1000 rounds down range and haven't had any issues. Perfect for the range.
Mike said:
Top shelf ammo for the price. 125 rounds without a hiccup. Might want to consider a lighter round in a compact...kicked too much for my wife in my sr40c (usp handled it like a champ) but I wouldn't hesitate to buy again. Maybe 165gr so we can both use it :)
Donnie said:
Went thru 250 rounds over the last 2 weeks with no issues at all. Great ammo and very good price. Gun was a lot cleaner than I anticipated after I shot 130 rounds. Would recommend this ammo to anyone.
Lou said:
Good ammo for the price
Davedee said:
I use CCI as my preferred ammo. Have a fussy SIG 22 semi-auto that can only use CCI products. I have no issues with CCI in my other 40 and 9 mm cal. weapons and recommend to others. Also, I share with others when I purchase in bulk so they have an opportunity to try you out.

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Click To Purchase This 40 Cal Magtech Ammunition

Magtech 40 cal Ammo - 1000 Rounds of 180 Grain FMJ Ammunition

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Walt said:
It was easy to order and had no problems comparing products. The package was heavy but taped and secured well. It arrived in the normal amount of time and performed well at the range. Good value.
Gomar cools said:
Good round and a value at the price point. Rounds ramp well in all makes of gun we use.

Magtech 40 Cal Ammo - 50 Rounds of 165 Grain FMC Ammunition

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Jody said:
I would recommend this ammo to anyone having a .40 S & W pistol..I used in my new Taurus TU pistol

Click To Purchase This 40 Cal Winchester Ammunition

Winchester 40 cal Ammo - 100 Rounds of 165 Grain FMJ Ammunition

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Don said:
Fine performance

Winchester 40 cal Ammo - 500 Rounds of 180 Grain FMJ Ammunition

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Dean said:
Top of the line on all categories !!!
Charles said:
I'm happy with the prices and delivery times; My only complaint is i would rather the products come in unmarked boxes, since I am in the process of stockpiling ammo against the future laws of our state., I would rather no one knows what I'm purchasing, and having delivered.
Paul said:
Prompt service on my order and the ammo performed as expected. Great savings buy from ammo.com as opposed to retail.

Blazer 40 cal Ammo - 50 Rounds of 180 Grain FMJ Ammunition

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Benzo said:
Excellent never jammed function great everytime as intended great ammo

Winchester USA Ready 40 S&W Ammo - 50 Rounds of 165 Grain FMJ FN Ammunition

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Adam said:
I fired these rounds using my mp 40. I will definitely use these again.

Winchester 40 cal Ammo - 20 Rounds of 165 Grain JHP Ammunition

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jonnycakes said:
very pleased with the ammo and how fast it shipped.

Bullet Points: 40 Cal Ammo

A leading cartridge among the FBI and law enforcement agencies in the United States, the .40 Smith & Wesson gives police the capacity of the 9mm and the power of the .45 – also making it popular among civilians for self-defense and sport shooting.
.40 S&W ammo has also been adopted by the U.S. Coast Guard as its primary issue sidearm, due to its balance of muzzle energies and magazine capacity.
Civilians have adopted .40 S&W ammunition for many of the same reasons law enforcement has. Its mix of magazine capacity, muzzle energy and limited recoil make it ideal for home defense and concealed carry. Find .40 S&W ammo for sale in a variety of quantities and bullet types.

The Ammo.com Guarantee

One of the things our customers love most about us is our fast shipping. In fact, they rave about it. When you browse our inventory, you’re seeing exactly what we have in our warehouse, on hand, ready to ship. That’s why, in general, orders placed before 3:00pm Eastern on a weekday will ship same day. Orders placed after this time, or on a weekend or holiday, will ship the next business day.

Included in every order is a donation to a pro-freedom organization that shares our values. After checking out, choose an organization from our Freedom Fighter Support list, and we will donate 1% of your purchase – all at no cost to you.

It is our mission to deliver your ammunition quickly at a great price – all while helping to support those who protect our freedoms to do so.

Happy Ammo.com Shooters

40 Cal (S&W) Ammo For Sale

Blazer 40 cal Ammo - 1000 Rounds of 180 Grain FMJ Ammunition

Winchester 40 cal Ammo - 500 Rounds of 165 Grain FMJ Ammunition

Magtech 40 cal Ammo - 1000 Rounds of 180 Grain FMJ Ammunition

Winchester 40 cal Ammo - 500 Rounds of 165 Grain FMJ Ammunition

Magtech 40 cal Ammo - 50 Rounds of 180 Grain FMJ Ammunition

Magtech 40 Cal Ammo - 50 Rounds of 165 Grain FMC Ammunition

Winchester 40 cal Ammo - 100 Rounds of 165 Grain FMJ Ammunition

Winchester Super Clean 40 S&W Ammo - 500 Rounds of 120 Grain Lead-Free FMJ Ammunition

Winchester 40 cal Ammo - 500 Rounds of 180 Grain FMJ Ammunition

Blazer 40 cal Ammo - 50 Rounds of 180 Grain FMJ Ammunition

Winchester USA Ready 40 S&W Ammo - 50 Rounds of 165 Grain FMJ FN Ammunition

Winchester 40 cal Ammo - 50 Rounds of 180 Grain FMJ Ammunition

Winchester 40 cal Ammo - 50 Rounds of 165 Grain FMJ Ammunition

Winchester 40 cal Ammo - 500 Rounds of 165 Grain BEB Ammunition

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

Winchester 40 cal Ammo - 50 Rounds of 165 Grain BEB Ammunition

Barnes VOR-TX Handgun 40 S&W Ammo - 20 Rounds of 140 Grain XPB Ammunition

Winchester 40 cal Ammo - 20 Rounds of 180 Grain JHP Ammunition

Barnes TAC-XPD 40 S&W Ammo - 20 Rounds of 140 Grain TAC-XP Ammunition

Winchester 40 cal Ammo - 20 Rounds of 165 Grain JHP Ammunition

History of 40 Cal (S&W) Ammo

What are the most popular .40 cal brands you sell?

Best .40 Cal Ammo for Specific Uses

Customer Reviews