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They use bullets of the same diameter, but with different weight ranges, which happen to overlap. The .380 uses a 9mm diameter bullet in a 17mm long case. The 9mm uses a 9mm diameter bullet in a 19mm long case.

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Q: Which is bigger round 380 or 9mm?
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Related questions

Can you shoot 9mm rounds from a 380 pistol?

No it is dangerous to attempt a 9mm is a bigger bullet. More specifically, 9mm Luger is a longer cartridge that .380 ACP.


Can you use a 9mm magazine with a 380 handgun?

Usually not. The 9mm Parabellum catridge is longer than the .380, as a result, a 9mm magazine is also bigger, and the magazine will not fit in the .380 magazine well.


What is bigger 9mm or the 380 acp?

Projectile diameter is the same. 9mm case length is longer.


What is the difference between 380 reloading dies and 9mm reloading dies?

im pretty sure the 9mm cartrige is bigger than the 380. So the 380 cartrige might not fit inside the 9mm die.


A 9mm round is equal to what caliber?

The 9mm round measures .356 inch in diameter. a 380 is 95 gr 9mm 124gr 40 is180 gr 45 is 230 gr


Is a .380 ammo round more powerful than a 45?

No, the .380 has less power than the 9mm or the .45 .


What is a 380 DA pistol?

A double action pistol that chambers a .380 ACP round. AKA 9mm Kurz


Can 380 ammo be used in 9mm?

No! Both of those cartridges are ACP where it uses the mouth of the case to establish proper head spacing and to prevent the round from dropping too far in to the barrel. The cases are of different lengths. 9mm is 19mm (.754in) and the 380 is .680 in. The 380 will drop in to a 9mm barrel, but would be dangerous to shoot. The action of a 380 will not close on a 9mm.


Can you fire a 9mm luger in a 380?

No, the calibers and chamberings are completely different. It is not safe to attempt to fire any caliber of ammunition in a gun, other than what is stated on the barrel. actually the 380 caliber is almost equal to the 9mm. the 380 caliber is often refered to as a 9mm short. the difference is the 9mm case is slightly bigger then the 380 case and the 380 bullet might be a little lighter.......................


Can you fire a 380 round from a sig 9mm?

The 380 and 9mm are two different cartridges, and you should never try to fire anything out of any gun other than what it is designed to shoot.


Why is it called the 380 9mm kurz does it shoot 9mm and 380?

They are the same round. In the "metric world" outside the US it's called 9mm Kurz (German for "short") and in the US it's called the .380 ACP. Other names, depending on the country and manufacturer, include .380 Auto, 9mm Browning, 9mm Corto, 9mm Short and 9x17mm, and there are even some others. The confusion is caused by the fact that US ammo named .38 or .380 is the diameter of the brass cartridge while the bullet is actually .35" (9mm) diameter.


Can a 380 fire a 9mm?

380 and 9mm ammunition IS NOT INTERCHANGEABLE.