NO
No, i asume you dont have see .380 pistol and a revolver 38 spl, the .380 and 38 spl ammo share de same diameter boot no the longer, the 38 is for a 38 special revolver tipe and the .380 is for an automatic pistol tipe some people call 9mm short.
No.
No, you cannot.
Not really. The .38 usually refers to a rimmed revolver cartridge, such as .38 S&W, or .38 Special. The.380 is an automatic pistol cartridge, and much shorter.
No.
No, you cannot.
No, you cannot.
The 38 special will be in a revolver and the 380 ACP most probably a semi-auto. However some of the energy of the bullet is used to eject and reload the 380 which dampens the recoil a bit. Also the .38 special is actually 0.357 " diam and the 380 is 0.355". The upshot of it all is that the .38 would have more recoil.
You can shoot them in a .357 Magnum revolver, but that's about it.
Yes.
A ".38 +P revolver" is simply a .38 Special revolver which is rated to fire +P loads. It's still a .38 Special, and the +P doesn't change the dimensions of the round itself.