No. They both use a different diameter bullet and the case is different. The .357 Sig case is a bottle-necked version of the .40 S&W case. The .357 mag is a longer version of the .38 Special.
No. However, .38 Special ammo CAN be safely fired in a .357 Magnum firearm. Both cartridges use a bullet that is .357 in diameter- but the .357 magnum is longer, and more powerful.
Well, yes and no. Both the .357 Magnum and the earlier .38 Special catridge both use a bullet that is .357 inches in diameter. The .38 Special in not a TRUE .38 caliber cartridge.
a 150 grain bullet shoots 3290 fps
310mph, 500kph
Yes, but, not recommended.
No. The two cartridges are not interchangeable. The .357 Sig got its name because it was an attempt to replicate the performance of the .357 Magnum cartridge in a semi-auto pistol. This was done by taking a 9mm bullet, and placing it in a necked down .40 S&W casing, whereas the .357 Magnum is a much longer, and rimmed, cartridge, developed simply by lengthening the .38 Special.
38 Special and .357 Magnum.
The ,357 Magnum is a longer catridge, and is loaded to higher energies- meaning that the bullet is pushed harder, and goes faster. And yes, the typical .357 Magnum handgun is built stronger than the typical .38 Special, to handle the increased forces.
.357 Sig and .357 Magnum are not even close. .357 Magnum is a rimmed, straight walled cartridge for use in revolvers. .357 Sig is a rimless, bottle necked cartridge used in semiautomatic pistols. They don't even use the same bullet diameter. Other than the name, there is almost no similarity. In other words, NO.
Korth
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