NEVER FIRE OR ATTEMPT TO FIRE AMMUNITION IN A WEAPON NOT DESIGNED FOR THAT AMMUNITION!!!!!!!!!!!!!!!!!!!!!!!!!!!
Danger,danger, danger
.380 auto ammunition can be a "ball" style bullet or metal jacketed hollow point.
Browning made the "Baby Browning" in Belgium for several years, on the muzzel of this tiny 6 shot automatic it states .6mm. It does in fact take 25 caliber ammunition.
No
Yes- you use the ammunition that is marked on the firearm.
None, the projectile diameter is the same for both - .355. If you are asking about a complete round of ammunition, the 9mm case is 19mm long and the 380 case is 17 mm long. This cartridge is called the ".380 Auto" for use with an automatic pistol. However, the most common 9mm round is the "9mm Lugar". This cartridge has a heavier bullet and a longer case, thus a larger muzzle velocity and energy than the .380 Auto.
The short answer is no. The longer answer is, it might be possible to get it to fire, but you should never use any ammunition in a gun other than what it was designed to use. It is possible to damage the gun or get hurt yourself.
Could you be a little more specific? There are lots of rifles considered large caliber, therefore there are all sorts of ammunition.
32 ACP
A ".45 caliber" can be a gun that uses .45 caliber ammunition or it can be a round of that ammunition. There are several specific calibers of small arms ammunition that are all generally called ".45 caliber." They have bullets that are roughly .454 of an inch or 454/1000 fractionally. A famous .45 caliber is the .45 Long Colt, invented in the 1870s and still popular today. It is used in revolvers. Another caliber that is the same diameter but a lot shorter in length is the .45 ACP or .45 automatic Colt pistol. It was made for use in the U.S. military's Model 1911 handgun, and it is still a popular caliber today in that gun and in other handguns. There are some rifles and carbines that use .45 caliber ammo, too.
No. Generally speaking, you can only use the correct caliber magazine for any given handgun, and .380 and 9mm are not interchangeable.
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.
Question is too broad to answer. In general, use ammunition that is the same as the caliber or gauge marked on the firearm. If it is marked .38 Special, use only .38 Special- NOT .38 S&W, NOT .380. NOT .38 Super.