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   Title      Click Headers to Sort Quantity Bids Price Time Left
685524848
 
 
 
 
20 $419.99 89d 7h +
685479583
 
 
 
 
50 $699.00 89d 5h +
684512201
 
 
 
 
30 $25.00 86d 20h +
683546558
 
 
 
 
200 $34.99 84d 15h +
682903674
 
 
 
 
10 $725.00 83d 6h +
685418419
 
 
 
 
90 $359.00 83d 5h +
684324865
 
 
 
 
150 $395.00 83d 5h +
682388657
 
 
 
50 $400.00 82d 5h +
685211561
 
 
 
 
60 $575.00 82d 1h +
681976034
 
 
 
10 $299.99 81d 6h +
681140276
 
 
 
400 $19.99 79d 7h +
680802420
 
 
 
 
50 $359.00 78d 11h +
680781031
 
 
 
 
10 $899.99 78d 10h +
680653113
 
 
 
 
250 $1,420.92 78d 4h +
680653111
 
 
 
 
50 $1,202.14 78d 4h +
683953316
 
 
 
 
230 $512.78 78d 4h +
680647488
 
 
 
 
40 $515.74 78d 4h +
680646311
 
 
 
 
990 $232.47 78d 4h +
680646290
 
 
 
 
990 $244.15 78d 4h +
680645982
 
 
 
 
250 $245.75 78d 4h +
680645738
 
 
 
 
990 $270.52 78d 4h +
680644845
 
 
 
 
60 $372.17 78d 4h +
680644784
 
 
 
 
50 $354.68 78d 4h +
680643371
 
 
 
 
120 $456.88 78d 4h +
680642443
 
 
 
 
50 $504.76 78d 3h +
680642358
 
 
 
 
50 $504.76 78d 3h +
680463544
 
 
 
 
10 $484.99 77d 16h +
680316392
 
 
 
 
310 $416.03 77d 10h +
680316375
 
 
 
 
250 $405.53 77d 10h +
680290078
 
 
 
 
470 $172.22 77d 9h +
680290026
 
 
 
 
350 $214.15 77d 9h +
680289626
 
 
 
 
250 $314.00 77d 9h +
680289608
 
 
 
 
160 $369.00 77d 9h +
680289603
 
 
 
 
180 $171.20 77d 9h +
680289565
 
 
 
 
90 $172.22 77d 9h +
680289559
 
 
 
 
90 $305.00 77d 9h +
680289553
 
 
 
 
80 $171.20 77d 9h +
680289548
 
 
 
 
80 $310.00 77d 9h +
680289478
 
 
 
 
670 $172.22 77d 9h +
680287084
 
 
 
 
80 $343.95 77d 8h +
680286852
 
 
 
 
130 $539.00 77d 8h +
680286826
 
 
 
 
1360 $539.00 77d 8h +
680286782
 
 
 
 
1230 $539.00 77d 8h +
680286685
 
 
 
 
90 $786.89 77d 8h +
680286653
 
 
 
 
70 $915.89 77d 8h +
680280904
 
 
 
 
50 $427.57 77d 8h +
680280836
 
 
 
 
40 $421.07 77d 8h +
680267902
 
 
 
 
170 $564.38 77d 8h +
680267879
 
 
 
 
140 $510.63 77d 8h +
680267769
 
 
 
 
60 $508.25 77d 8h +
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