Popular Ammo>40 Cal Ammo

40 Cal Ammo for Sale - Buy 40 Cal Ammunition Online

40 cal ammo is for sale every day at GunBroker.com. You can buy this type of ammunition made by manufacturers such as Remington and Hornady through one of the many sellers listing their products here at GunBroker.com, the world's largest gun auction site.

Getting to know 40 cal ammo

.40 caliber ammo features rimless, straight cartridges, which were originally developed at the behest of the FBI, which aimed to replace agents’ standard-issue revolvers with semiautomatic pistols in order to increase ammo capacity and reduce reloading times in the field.

The FBI specifically requested that Smith and Wesson produce a new handgun based on the existing Model 4506 .45 that could function with 10mm ammunition. By reducing powder in existing 10mm ammunition, thus providing more airspace in the case, S&W realized it could produce ballistics to match the FBI’s specifications. S&W then teamed with Winchester to produce the new cartridge, the .40 S&W.

40 cal ammo debuted in January 1990, but it was actually Glock that had the first commercially available pistols chambered to fit the new cartridges.

40 cal ammo specifications

The biggest difference between the 40 cal ammo cartridge and its parent case, the 10mm Auto, is the 40 cal ammo’s use of a small pistol primer and shortened length. The neck and shoulder diameter of .40 cal ammo cartridges is .423 inches. The base and rim come in at .424 inches with a thickness of .055 inches. The case is .850 inches of the overall length, 1.135 inches. The rifling twist is 1 in 16 inches.

Get your 40 cal ammo today

40 cal ammo is ideal for self-defense and is popular with law enforcement in the US, Canada and Australia. GunBroker.com sellers update their auction listings frequently, so if you're looking to buy 40 cal or other pistol ammo, check back often.

40 For Sale


Displaying the first 10000 items that match your criteria. Please refine your search.
Item   TitleClick Headers to Sort Quantity Bids Price Time Left
632235599
 
 
 
 
10 $631.86 < 1m+
632235611
 
 
 
 
10 $512.42 < 1m+
632235614
 
 
 
 
10 $0.01 < 1m+
632235631
 
 
 
 
10 $695.00 < 1m+
632235662
 
 
 
 
10 $369.95 < 1m+
632235859
 
 
 
 
10 $665.25 2m +
631666117
 
 
10 $519.99 2m +
632236036
 
 
 
10 $199.99 3m +
630655913
 
 
 
 
10 $359.99 3m +
632236250
 
 
 
 
10 $479.99 3m +
632236258
 
 
 
 
10 $629.00 3m +
632236263
 
 
 
10 $675.00 3m +
632236665
 
 
 
 
10 $52.95 4m +
632237268
 
 
 
 
10 $49.95 7m +
632237316
 
 
 
10 $734.00 7m +
632237899
 
 
 
10 $799.00 10m +
632238366
 
 
 
 
10 $450.00 12m +
632238392
 
 
 
 
10 $77.95 12m +
632238415
 
 
 
 
10 $999.99 12m +
632238480
 
 
 
 
10 $470.81 12m +
632238768
 
 
 
 
10 $61.95 13m +
632238802
 
 
 
10 $599.99 13m +
632239123
 
 
 
10 $814.00 14m +
630658380
 
 
 
 
10 $424.99 15m +
632239449
 
 
 
 
11 $500.00 15m +
632239661
 
 
 
 
10 $66.95 17m +
632239953
 
 
 
 
10 $499.00 18m +
632240312
 
 
 
 
10 $62.95 20m +
632240326
 
 
 
10 $459.99 20m +
632240328
 
 
 
 
10 $580.49 20m +
632240594
 
 
 
 
10 $469.99 21m +
632241408
 
 
 
10 $379.00 24m +
632241440
 
 
 
 
10 $299.98 24m +
632241504
 
 
 
10 $519.99 24m +
632242036
 
 
 
 
10 $899.99 25m +
632242379
 
 
 
10 $814.00 25m +
632243033
 
 
 
10 $499.00 27m +
631117754
 
 
 
 
10 $89.00 31m +
632245180
 
 
 
10 $469.99 31m +
632245778
 
 
 
 
10 $399.00 33m +
632245781
 
 
 
 
10 $867.76 33m +
632246234
 
 
 
 
10 $429.00 34m +
632246243
 
 
 
 
10 $469.00 34m +
632246388
 
 
 
 
10 $45.95 34m +
632246779
 
 
 
 
10 $339.99 35m +
632247020
 
 
 
 
10 $499.00 35m +
632247047
 
 
 
 
10 $1,059.98 35m +
632247077
 
 
 
10 $529.99 35m +
632247110
 
 
 
10 $539.99 35m +
632247115
 
 
 
 
10 $33.95 35m +
Key:  Pictures   Fixed Price   Reserve   BuyNow!  Featured Item   QuickLook  Immediate Checkout
Ending times displayed are scheduled ending times subject to our 15 minute rule
Updated: 3/24/2017 6:00:15 PM EST   Check GunBroker.com official time

Loading QuickLook...

cancel