Follow the recommendation in the reloading manual you are using. Differnt powders might call for small pistol or small pistol magnum.
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.
it can use any 357 mag. shell
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.
Winchester, Marlin, Rossi (and maybe a few others) make lever action rifles in .357 Mag... I personally wouldn't pick that cartridge for anything other than a pistol, or if I were shooting in a cowboy match (where the .357 isn't allowed for the most part, anyway...) But if you need a long gun in .357 Mag, there are plenty out there. Good luck.
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.
You should always use primer first.
Yes. All .357 S&W Magnum firearms are capable of firing .38 Special ammunition. The case of the .357 is just slightly longer.
.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.
Depending on the weight, possibly, but in most cases, accuracy may not be good.
Drywall primer. -It's denser than regular primer.
The sn is located on the butt of the weapon.
you should use "Primer blast" at NCBI site