The 9mm means that the bore is 9mm inside diameter . The bullet will be roughly 9mm or a little more in diameter. The 45 means basically the same, the bore of the barrel is .45 caliber. but the bullet will be anywhere from .451 to .452 in diameter depending on manufacture and on type of metal the bullet is made out of. So basically yes.
9mm= .355 45 ACP = .452
45 = .451 9mm = .355 The .45 handgun throws the bigger and heavier bullet. The 9mm fires a lighter and smaller bullet, but at a higher speed. The size of the guns that fire either of these rounds could be the same size. Both 9mm pistols and .45 pistols come in full sized guns, compact guns, and even sub-compact or micro sized.
9mm MKV is not the same as 9mm Luger.
The common 9mm cartridge is known by many names. All of the following 9mm's are one and the same: 9x19mm, 9mm Nato, 9mm Luger, 9mm Parabellum. There are no 9mm cartridges specific to Glock or Smith & Wesson.
Yes
the 45 assuming your using the same grain bullet
yes................ Actually, it depends. There are several different case lengths that accept a 9mm bullet, so it depends on which particular cartridge you are referring to. For example, 9mm Kurtz is not the same 9mm para.
If nothing else is stated, yes.
No. There several different case lengths that accept a 9mm bullet. 9mm Kurz is not the same as 9mm Luger, which in turn is not the sameas 38 super, 9x21, 9x20, etc. The diameter is the same, but the cartridges are different sizes.
Yes it is. The 9mm Parabellum ( latin for "For War" ) was invented by Georg Luger for his Luger 9mm semi-automatic pistol. Thus they just called it the 9mm luger round. Both names are correct for the same round.
No. The Largo round is longer.
9mm IS the caliber. If you mean what is it equivalent to, it is approximately the same as a .38.