You cannot re-size 380 brass with a 9mm sizing die, nor can you size 9mm brass with a 380 die. You can use the the bullet seating dies back and forth. But you'll need to get sizing dies in both 380 and 9mm. The shell holder and primers are the same for both.
im pretty sure the 9mm cartrige is bigger than the 380. So the 380 cartrige might not fit inside the 9mm die.
Case length.
Fired cartridge cases are cleaned, the old primer punched out, replaced by a new primer. A measured charge of gunpowder is added to the case, and a new bullet pressed in place. A tool called a reloading press is used, together with reloading dies.
I personally don't make 380 handguns, never have, BUT, the 380ACP round was very popular in the early to mid 20th Century, especially in South America and Europe, where citizens were limited to handguns of .380ACP (or 9mm short), or smaller. There has been a resurgence of the .380ACP's popularity in the early 2000's. Although it is not as powerful as a 9mm Parabellum, it is still adequate for personal protection. These weapons can be made very small and lightweight, which appeal to some owners. Due to this popularity, almost all gun manufacturers have designed modern pistols that fire the .380ACP.
Although the two bullets have the same diameter, one cannot shoot a 9mm Parabellum round from a .380ACP pistol. The .380acp is called a 9mm short in other countries. Its case is 2mm shorter than the 9mm Parabellum. This means that if one chambered a 9mm in a .380, the breech would not be fully seated. Often, modern handguns would not allow the trigger to actuate the hammer due to a disconnector. If one were able to get a hammer to fall, the design of the .380acp pistol is meant for the chamber pressures that .380 ammo produce, the 9mm produces much more pressure. The result would likely be a severe malfunction, maybe even a explosion with bits of gun flying off like shrapnel. The shooter would like be injured, how severely would depend on how the gun parts fragmented.
9mm (usually called 9mm Luger or 9mm Parabellum) almost always has a higher muzzle velocity than the 380 ACP (also called the 9mm short, 9mm Kurtz, and 9mm Corto). The two bullets are essentially the same diameter however the 9mm Parabellum is almost always a heavier bullet than the 380 ACP with a larger powder charge and a significantly higher chamber pressure.
Small pistol. But, be sure to read a reloading manual. You need to be sure of every step you are taking and every component you are using.
Not sure of the question. Are you talking about for reloading purposes? I wouldn't recommend stretching out shorter 9mm casings (such as 9x17/.380 ACP). You can use 9x19 casings.. the 9x19 is also known as the 9mm Luger or 9mm Parabellum. If you're talking firing another type of cartridge in a 9x19/9mm Luger/9mm Parabellum pistol, the answer is a big, resounding, no. Cartridges such as the 9x17 (a.k.a., 9mm Kurz, 9mm Short, .380 ACP) will not provide the proper headspacing, which could result in a catastrophic failure of your firearm - with the potential of injury or death to the firer - when fired. The 9x18 Makarov cartridge, likewise, is in no way compatible with a 9x19/9mm Luger/9mm Parabellum pistol.
Of course! It's 9x19mm or 9mm Parabellum. The German Luger also used the 9x19mm.
No
There is no one answer- because there is no one gunpowder, and no one bullet weight. Amount of powder is driven mainly by those two factors. If you intend to reload, get a copy of ABCs of Reloading, and read entire book first- excellent reference.
Depends on which 9mm you are refering to