No.
No, and trying it would be a very dangerous thing to do. The two rounds are not interchangeable in any way.
Simple answer, No.
No. Ammo designated as .38 or .38 special is different than ammo designated as .380. .380 is designed for semi-auto handguns and .38 ammo is for revolvers.More to the point, the .38 Special has a longer case, and a larger diameter projectile. The .38 special bullet measures .357" diameter, the .380 measures .355" diameter. The .38 special is a 'rimmed' cartridge, and the .380 is 'rimless'. Luckily, .38 Special ammo will not fit in a .380 magazine, otherwise the results could be disastrous, possibly turning your .380 handgun into a hand grenade.
Your Rossi revolver fires the .38 special cartridge.
Oddly enough, both are about .35 Caliber, which is why one can fire a .38 Special round out of a .357 Magnum.the .38 Special has an actual diameter of .357 and the .380 has a diameter of .355. So the .38 special is larger and they are typically heavier than the .380 (110gr vs 90gr).
you can shoot standard 38 special rounds out of a firearm marked for 38 special +p
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.
.38 Special, .38 Long Colt, .38 Short Colt. .38 S&W CANNOT be used in a .38 Special. .38 Special can be fired from a .357 Magnum weapon, but .357 Magnum cannot be fired from a .38 Special weapon.
The .38 Special can fire .38 Special, or .38 Long Colt. It cannot fire the .38 S&W, which is fatter and shorter.
No.
Not recommended
In general, a .38 Special +P+ load can be more powerful than a mild .380.