380 auto. Many good brands of ammo out there.
You can only use .380 ACP ammo in a .380 pistol. Period.
NO
Let's start by using the right term- I think you mean a .380 cartridge- many guns use .380 caliber BULLETS.In general, NO. Unlike .22 shorts and long rifles, rimless cases do not interchange. It may be possible to get a .380 cartridge to fire in another gun- but not safely. Use ammo that is the caliber marked on the gun.
Yes you can. .380 auto.
.380 ACP
380
9mm and 380 use the same diameter projectile, .355 inch
Yes I have a bunch of airsoft gun's and i have used ammo that is the wrong size... and i clogged the gun and had to take it apart to get it out.
.380 ACP, and nothing else. Right now, there's something of a shortage on .380 ammo, and it's not the easiest to find at the moment.
I use .20g blaster bb's. They are quite expensive, but if you use low quality ammo it will wreck the gun.
There are varying opinions on what ammo is the "best." Generally speaking, the best ammo to use is whichever ammo is the most reliable in your particular gun.