The Makarov ammunition has a case (the brass shell containing the explosive powder behind the bullet) which is one millimeter shorter than the 9mm Luger which is also commonly called 9mm Parabellum (meaning "for war"). There are two major concerns with firing a foreign cartridge through a gun that was not built for the round: one is the size/shape and the other the power of the load. In this case, the shape is different in that there is a millimeter missing from the Makarov, which could potentially cause errors in feeding the ammunition through a semi-automatic. The main problem is that the muzzle energy and the velocity of the 9x19 Parabellum are higher than the Makarov, and the detonation of the Parabellum develops much higher chamber pressures than the Makarov. Because of this, the Makarov ammunition is used in semiautomatics with a different design than the 9mm Parabellum. If you tried to fire it through a locked-breech pistol (which many 9mm Parabellum pistols use) and ones with stronger springs, it is highly likely that the gun will jam because the Makarov cannot generate enough energy to open the slide and properly eject the shell. In general, if you want to use a round in your weapon that is not standard, it MUST be a weaker round or you may seriously injure yourself. Second, if there is any kind of discrepancy in the sizes or shapes of your cartridge (such as a bottlenecked cartridge or a shorter cartridge) then it's usually not worth trying it.
NO- outside of case dimensions, the 9x18 uses a .366 bullet designed for the Makarov. The standard international cartridge, 9mm Luger (9x19) uses a .355 bullet. The Luger will not fit in the Makarov, and if you try to fire the Makarov in a standard 9mm gun, you may just damage the gun or blow out the barrel
do not attempt to fire!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
NO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! DO NOT ATTEMPT TO DO THIS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Never fire ammunition in a weapon not specifically chambered for it. DANGER, DANGER, DANGER!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Depends. .380 ACP is used to refer to the 9x17 cartridge. It is not interchangeable for use in 9x18 (9mm Makarov), 9x19 (9mm Parabellum/Luger), or any other firearm designed for any cartridge other than the .380 ACP/9x17 cartridge.
No. You should never try to load or fire any ammo into a gun other than what it is designed to fire. A .44 caliber gun is designed to fire .44 caliber ammo.
9mm
Generally speaking, no, and, you should never try to fire any ammo from a gun other than what it is designed to fire. You may be able to get it to fire, but you could damage the gun or hurt yourself.
No
metal
Yes.
NO
If you can't tell, go to a gunsmith. DO NOT ATTEMPT TO FIRE UNTIL YOU KNOW EXACTLY WHAT YOU HAVE AND THAT YOU HAVE THE CORRECT AMMUNITION!!!!!!!!!!!!!!!!