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
709489171
 
 
 
20 $380.00 89d 9h +
709464259
 
 
 
 
250 $539.00 89d 7h +
709464215
 
 
 
 
40 $405.90 89d 7h +
709464085
 
 
 
 
50 $949.99 89d 6h +
709464024
 
 
 
 
30 $695.50 89d 6h +
709463972
 
 
 
 
20 $783.24 89d 6h +
709463867
 
 
 
 
50 $615.25 89d 6h +
709463549
 
 
 
 
239
10 $1,105.62 89d 6h +
709463389
 
 
 
 
20 $949.99 89d 6h +
709463342
 
 
 
 
820 $308.53 89d 6h +
709463312
 
 
 
 
20 $786.89 89d 6h +
709463250
 
 
 
 
60 $405.19 89d 6h +
709156807
 
 
 
 
30 $479.71 88d 4h +
709111480
 
 
 
80 $210.00 87d 21h +
709111309
 
 
 
70 $210.00 87d 21h +
709110961
 
 
 
70 $210.00 87d 21h +
709110783
 
 
 
80 $210.00 87d 21h +
708423017
 
 
 
 
190 $52.19 86d +
708325987
 
 
 
 
10 $399.00 85d 17h +
707749070
 
 
 
 
10 $300.00 84d 17h +
707677965
 
 
 
10 $449.99 83d 18h +
707177854
 
 
 
 
580 $16.76 82d 12h +
707177505
 
 
 
 
180 $44.00 82d 12h +
707176789
 
 
 
 
20 $21.77 82d 12h +
707174011
 
 
 
 
130 $50.40 82d 12h +
707173634
 
 
 
 
120 $55.95 82d 12h +
707173602
 
 
 
 
220 $66.26 82d 12h +
707173589
 
 
 
 
120 $72.92 82d 12h +
707173542
 
 
 
 
190 $106.49 82d 12h +
707173530
 
 
 
 
180 $119.51 82d 12h +
706866554
 
 
 
10 $40.00 81d 17h +
706802182
 
 
 
 
30 $58.48 81d 15h +
706801943
 
 
 
 
20 $23.37 81d 15h +
706801363
 
 
 
 
320 $15.28 81d 14h +
706801362
 
 
 
 
50 $85.92 81d 14h +
706801358
 
 
 
 
290 $15.28 81d 14h +
706792321
 
 
 
 
230 $4.99 81d 14h +
706788454
 
 
 
 
20 $28.99 81d 14h +
706785992
 
 
 
 
40 $92.27 81d 14h +
708337936
 
 
 
 
10 $299.99 79d 5h +
705334989
 
 
 
100 $22.00 77d 20h +
705025359
 
 
 
 
10 $429.99 77d 14h +
703900733
 
 
 
 
40 $379.99 74d 19h +
702482936
 
 
 
 
50 $595.00 71d 9h +
702203518
 
 
 
80 $199.99 70d 16h +
701905492
 
 
 
50 $42.00 69d 20h +
701804570
 
 
 
 
10 $399.99 69d 15h +
701775810
 
 
 
 
30 $619.00 69d 14h +
701738813
 
 
 
10 $429.99 69d 12h +
701669478
 
 
 
 
1060 $539.00 69d 8h +
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