It was developed in 1994, and named "357" because it was intended to duplicate the performance of .357 Magnum bullet (fired through a 4 inch revolver), in a cartridge designed to be used in a semi-auto pistol.
The .40 S&W guns can be converted to .357 SIG by a simple replacing of barrel, but some times recoil spring must be changed as well. Pistols with strong recoil springs can easily be converted by a simple barrel replacement.
.40 S&W magazines can also feed .357 SIG without any difficulty. But before thinking of conversion to this bullet it must be kept in mind that .357 SIG is loaded at higher pressure then .40 S&W, and that is why its not suitable for all .40 S&W guns because of increased bolt thrust.
Bullet dimensions:
Performance:
| Manufacturer | Load | Mass | Velocity | Energy | Expansion | Penetration | PC | TSC |
|---|---|---|---|---|---|---|---|---|
| Triton | Quik-Shok | 115 gr (7.5 g) | 1,425 ft/s (434.3 m/s) | 518 ft·lbf (702.3 J) | frag | 9.0 in (228.6 mm) | 4.1 cu in (67.2 cm3) | 43.2 cu in (707.9 cm3) (est) |
| Winchester | Ranger T | 125 gr (8.1 g) | 1,385 ft/s (422.1 m/s) | 532 ft·lbf (721.3 J) | 0.75 in (19.1 mm) | 11.5 in (292.1 mm) | 5.1 cu in (83.6 cm3) | 45.0 cu in (737.4 cm3) (est) |
| Federal | Premium JHP | 125 gr (8.1 g) | 1,430 ft/s (435.9 m/s) | 568 ft·lbf (770.1 J) | 0.62 in (15.7 mm) | 12.7 in (322.6 mm) | 3.8 cu in (62.3 cm3) | 49.5 cu in (811.2 cm3) (est) |
| Speer | Gold Dot JHP | 125 gr (8.1 g) | 1,385 ft/s (422.1 m/s) | 532 ft·lbf (721.3 J) | 0.68 in (17.3 mm) | 16.5 in (419.1 mm) | 6.0 cu in (98.3 cm3) | 45.0 cu in (737.4 cm3) (est) |
| Remington | JHP | 125 gr (8.1 g) | 1,350 ft/s (411.5 m/s) | 506 ft·lbf (686.0 J) | 0.57 in (14.5 mm) | 14.3 in (363.2 mm) | 3.6 cu in (59.0 cm3) | 41.7 cu in (683.3 cm3) (est) |
| Federal | Premium JHP | 150 gr (9.7 g) | 1,210 ft/s (368.8 m/s) | 488 ft·lbf (661.6 J) | 0.60 in (15.2 mm) | 15.0 in (381.0 mm) | 4.2 cu in (68.8 cm3) | 39.4 cu in (645.7 cm3) (est) |
Because of this bullet was designed to replace .357 magnum bullet, it does provide an equivalent performance with the ability to be used with semi-auto pistols, this gained this bullet high popularity and respect among civil and law enforcing agencies.
How ever this bullet is not as popular as 9mm parabellum, .40 S&W or .45 ACP. There fore only those who actually know about this bullet prefer it. Also it is said that this bullet is only available form high grade gun shops and may not be available from some local town gun shop.
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