Okay...lemme get the 9mms straight...

[N3rday]

9x17=9mm Kurz?
9x18=9mm makarov=.380 ACP?

I asked this a long time ago but for the life of me I can't keep the two straight.

Also, how do the ballistics for these two match up to 9x19?

 

[Mulliga]

I believe 9x17 is .380 ACP and is also called 9mm Browning short and 9mm kurz.

9x18 is 9mm Mak.

9x19 is much more powerful than either. Regular standard pressure 9x19 gives you approximately 325 to 350 ft lbs. All the .380 loads (the Mak loads are very similar) give about 200 ft. lbs.

Most common 9mm +P JHP loads will give you ~400 ft. lbs. - twice the energy of the .380 ACP.

 

[denfoote]

DING DING DING!!!!!

Mulliga has hit the nail on the head!!!

 

[JohnKSa]

In order of ascending ooomph.

9x17=9mmKurz=9mmBrowning=.380ACP (.355" bullet)

9x18 Makarov = 9mm Makarov (.363" bullet loaded to .380 Specs by American makers but capable of more ooomph as evidenced by foreign Mak ammo that falls almost exactly halfway between .380ACP and 9mm Luger)

9x18 Ultra (virtually non-existant in the U.S. Don't have specs. Just included to point out that 9x18 is not always 9mm Makarov)

9x19=9mmP=9mm Luger=9mm Parabellum=9mm NATO (.355" bullet)

There are also 9x21 (common in Italy to circumvent laws against 9x19 in civilian hands), 9x23, 9x25Dillon (10mm necked down to .355" bullet), 9mm Largo, .357SIG (.40S&W necked down to .355" bullet) and probably others I'm not aware of.

 

[Fumbler]

probably others I'm not aware of.

Don't forget the 38 Super.

Man there's a lot of .35 cal handgun rounds...

 

[Coronach]

JohnKSa has it right, and yes there are other ones out there too.

Don't, uh, mix them up. If you do, the most likely event is a fail-to-feed. However, its possible that you could get something really really icky to happen.

Bilateral symmetry implies that you have an extra of most important body parts, but lets not try to lose any, mmmkay?

Mike

 

[mete]

A long list . The 380 [9x17, 9mmshort,kurz,corto,] ..9mmMakarov[9x18]...9mmUltra[9x18 for a Walther pistol] ...9mm [9x19, Luger, Parabellum]...Lesser known - 9mm Glisenti [same dimensions as 9x19 but loaded to lower power, previous Italian military],..9mm Browning Long, 9mm Bayard, 9mm Steyr, 38 Auto, 38 Super and the 9mm Mauser, and probably a couple more !!!

 

[Coffee357]

9mm Federal - 9mm with a rim for 9mm revolvers

-Coffee

 

[Island Beretta]

wonder why so many 9mm diameter rounds when they are no good, according to some of our learned pundits??

 

[Fumbler]

Because they need to learn a little more

 

[halvey]

Because they're still trying to find one that works?

 

[JohnKSa]

If you look at caliber selection, you're driven to some conclusions:

.36" is a "good" caliber for a self-defense pistol.
.44-.45" is a "good" caliber for a hunting pistol.
.30" is a "good" caliber for a general purpose rifle.
.46 is a "good" caliber for a dangerous game rifle.
.22" is a "good" caliber for light recoil in either rifle or pistol.
.79" (12ga) is a "good" bore size for a shotgun.