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I think they are about the same in diameter right?

2007-12-31 02:42:51 · 17 answers · asked by Anonymous in Sports Outdoor Recreation Hunting

17 answers

Depends on exactly which cartridges your talking about. As pointed out by previous posters, the .357 magnum is a longer cartridge with a bullet diameter of .357.
However, if you're talking about the newer .357 Sig shell, which is a 10mm case necked down to accept a 9mm bullet, then the bullet diameter is exactly the same as the 9mm parabellum, and is slightly shorter in overall length ( 1.14" nominal O.A.L. for the .357 sig as compared to 1.169" nominal for the 9x19 mm )
Typical shell sizes:

9x19 mm Luger specs:
.355 bullet diameter
.754 case length
1.169 O.A.L.

.357 magnum specs:
.3565 bullet diameter
1.290 case length
1.590 O.A.L.

.357 sig:
.355 bullet diameter
.865 case length
1.14 O.A.L.

( Data taken from Speers reloading manual )

2007-12-31 07:34:51 · answer #1 · answered by nada.llame 3 · 0 0

At 1.590 inches in length, the .357 mag. is longer than the 9mm which measures only 1.169 inches in length. The bullet diameters, while close in size, are not actually the same size. The 9 mm measres .355 inches in diameter and ther .357 measures .358 inches in diameter.

I am assuming that when you say 9mm, you are asking about the 9mm parabellum as opposed to the 9mm Makarov. The dimentions for the 9mm Makarov are: .984 inches OAL with a bullet diameter of .363 inches

2008-01-01 09:41:28 · answer #2 · answered by Anonymous · 0 0

Case length of the 9mm Parabellum is 0.754" and OAL 1.169" compared to the 357 Magnum's 1.290 and 1.590". The 9 is a little fatter, tapering from a diameter of .390" at the head to .380 at the mouth, compared to a straight-walled .379" case in the 357. Of course, the autoloader uses a rimless design and the wheelgun round a rimmed one.
Also, reloaders know that a revolver is more forgiving in tolerances, and a little case lengthening or not sizing down fully at the head is going to be well tolerated. The rimless round headspaces on the case mouth, so it's not a good idea to be too sloppy with it.

2007-12-31 19:45:54 · answer #3 · answered by Anonymous · 0 0

The bullet dia. is the same. The 9mm is rimless
whilt the .357 is rimmed.
The .357 is longer even though the power is comparableto the 9mm , due to history.
The.357 was made longer so it wouldn't chamber
in .38 Spl. (also the same dia,), revolvers which
have a lower pressure rating.

2007-12-31 16:46:30 · answer #4 · answered by Irv S 7 · 0 2

The are about the same diameter but the .357 has a longer casing than the 9mm.

2007-12-31 15:57:32 · answer #5 · answered by corp20022 2 · 0 1

.357 is longer by more than a bit, but both slugs are in the .35 family with only a couple thousandths of an inch beiong the difference. The late, great Jeff Cooper ("The Colonel") used to call .38 and 9mm the "35"s.

2007-12-31 15:02:19 · answer #6 · answered by david m 5 · 0 0

The .357 Magnum is longer, they are for all intents and purposes the same diameter.

2007-12-31 14:24:22 · answer #7 · answered by Steel Rain 7 · 0 1

Slim is correct on the bore diameters for both cartridges, and the case length of the 9mmP. However, I think he entered the Cartridge Overall Maximum Length rather than the case length.

Maximum Case Length for the .357 Magnum is 1.290"

Doc

2007-12-31 14:10:44 · answer #8 · answered by Doc Hudson 7 · 0 0

The 357 is a longer cartridge but the 9mm is know much more popular as it can be fired in a semi auto pistol while the 357 has a rim and is fired from a wheel gun.^ shots vs 9-18.-

2007-12-31 13:21:50 · answer #9 · answered by danp 3 · 0 1

The .357 round is about 3x as long as the 9mm luger round. 9mm diameter is about .355-.356, almost at .357

2007-12-31 13:02:18 · answer #10 · answered by WC 7 · 1 2