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40 S&W Ammo
Browse In-Stock 40 S&W Ammo For Sale- Top Ammo Vendors
The .40 S&W is a rimless pistol cartridge developed jointly by major American firearms manufacturers Smith & Wesson and Winchester.
Smith & Wesson and Winchester introduced .40 Cal bullets in 1990, just six months after the Federal Bureau of Investigation requested the development of ammunition with the stopping power of the .45 ACP, but with the ease of use of the 9mm.
40 S&W quickly caught on and remains a popular caliber for personal protection and range training today. .40 cal ammo is still very common among shooters today and is one of the more modern rounds available to American civilian shooters.
About .40 S&W
- Type: Pistol
- Place of origin: United States
- Designer: Bob Klunk
- Designed: January 17, 1990
- Produced: 1990–present
Specifications
- Parent case: 10mm Auto
- Case type: Rimless, Straight
- Bullet diameter: .400 in (10.2 mm)
- Neck diameter: .423 in (10.7 mm)
- Base diameter: .424 in (10.8 mm)
- Rim diameter: .424 in (10.8 mm)
- Rim thickness: .055 in (1.4 mm)
- Case length: .850 in (21.6 mm)
- Overall length: 1.135 in (28.8 mm)
- Case capacity: 19.3 gr H2O (1.25 cm3)
- Rifling twist: 1 in 16 in. (406 mm)
- Primer type: Small pistol
- Maximum pressure: 35,000 psi (240 MPa)
Ballistic performance
| Bullet mass/type | Velocity | Energy |
|---|---|---|
| 10.69 g (165 gr) Federal FMJ | 1,130 ft/s (340 m/s) | 468 ft⋅lbf (635 J) |
| 7.45 g (115 gr) Cor-Bon Glaser | 1,400 ft/s (430 m/s) | 500 ft⋅lbf (680 J) |
| 10.04 g (155 gr) Federal HST | 1,160 ft/s (350 m/s) | 463 ft⋅lbf (628 J) |
| 8.74 g (135 gr) Underwood JHP | 1,400 ft/s (430 m/s) | 588 ft⋅lbf (797 J) |
| 12.95 g (200 gr) Doubletap FMJ | 1,050 ft/s (320 m/s) | 490 ft⋅lbf (660 J) |
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