9mm Automatic?

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David4516

David4516

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Just stumbled onto this article:

http://www.shootingtimes.com/ammo/9mm-automatic-better-9mm-cartridge/

Interesting... I've seen "nose dive" but usually only in cases where the bullet was seated a little deeper than it should have been into the brass. I'm not a fan of the taper in the 9mm case but mainly because straight case = easier to reload, not because I'm really concerned about reliability.

I like the concept of this 9mm Auto, but I also don't think that a "new" 9mm is going to do well commercially. I mean, why would somebody buy it when it might not be a long term success? You can buy 9mm Luger and know that it's going to be here for many decades to come (if not longer).
 
Only if it is significantly cheaper per round...right? I didn't think so either. ;) Can't say I've had or noticed a feeding issue with the old 9mm Luger.
 
People complain the .45 ACP does that. I see it as a magazine defect. Elevate the follower to present the round correctly and done.

ALL military rifle cartridges for the US are tapered but it's preferred as part of the necessary design for self loading full auto use. Straight wall cartridges are known to have sticking issues when they won't release from the chamber, and have higher friction on extraction. A taper wall cartridge accelerates letting go of the chamber as each fraction of an inch of extraction is enhanced by the diminishing diameter.

Just buy better mags with no tilt followers. There's no analysis it wasn't the problem in the first place.
 
I always thought 9mm (parabellum/luger) was one of the most reliable cartridges available??

I'd bet a beer that this "auto" round actually causes more problems if it ever makes it to large scale, real world use.
 
Unless there was some actual performance increase (i.e. extra fps through either more case capacity or higher pressure ceiling) I see absolutely no reason why anyone other than the countries that banned military cartridges would adopt this round.
In the cases of countries that banned 9mm luger, I could see this being a godsend, just ream the chamber out to a straight taper, stamp the slide something different and have at it.
 
Let's see here....a straight walled variant 9mm cartridge to make the rounds stack straighter in a magazine, and in the process, give it some extra "stones", with a little extra powder capacity to bring the ballistics up to .40S&W performance or better.

Wait, we already have the .38 Super caliber, the IPSC caliber of choice for those who want a major power factor class to compete alongside .40S&W and .45ACP.

Now all we need are more .38 Super chambered guns in addition to the few factory 1911 framed guns, and the custom race guns in that caliber. Why have a new 9mm variant when what we really think we know we want is a greater selection of guns chambered in .38 Super?
 
I'm surprised that .38 super isn't more popular than it is. It's like 9mm on steroids, much like .357 sig, but unlike .357 sig you can stuff more of them into a magazine since they don't add extra bulk (just length)...
 
Well, I guess the next question is ...given a particular load/brand of ammo, which 9mm gun make/model is most prone to exhibit the nosedive issue? Avoid that gun.

I have 3 9mms pistols with no such issue fortunately.

Also...it was funny in the comments posted in that article, how quickly the discussion disintegrated into arguments about what is the best caliber and what agencies are permitted to use. Juveniles. THR rules! Thanks guys.
 
The article is two years old, so it took a Ph.D. (with a Federal grant?) only 112 years to realize that the 9mm Luger is tapered! What great research! What perspicacity! What nonsense!

The reason for the taper, though, is not very clear. It is known that several of the national commissions testing the 7.65 Parabellum wanted a larger caliber, and the Prussian GPK mentioned 9mm. If that request by the government was interpreted by Luger as an order (not unusual in Germany), he could not change the cartridge base without changing the pistol and much of its tooling. Necking the 7.65 Parabellum to 9mm meant a tapered case, and gave Luger problems; but if 9mm was wanted, 9mm it would be, not 9.2mm or 9.3mm. The tapered case has advantages in easier extraction, but has problems in feeding, well known long before Doctor Miller's amazing discovery.

Would a straight case have been better? Would things be better in the handgun world if the 9mm Steyr or 9mm Largo have been more successful and become the "universal" pistol and SMG round? Your guess is as good as mine.

Jim
 
How's that .327 Federal, 9mm Auto Rim Federal, .480 Ruger, .Winchester Super Short Magnum working out?
As stated, a solution looking for a problem.
Stick with tried and true and you can't go wrong.
 
JDR said:
Let's see here....a straight walled variant 9mm cartridge to make the rounds stack straighter in a magazine, and in the process, give it some extra "stones", with a little extra powder capacity to bring the ballistics up to .40S&W performance or better.

Wait, we already have the .38 Super caliber, the IPSC caliber of choice for those who want a major power factor class to compete alongside .40S&W and .45ACP.

Now all we need are more .38 Super chambered guns in addition to the few factory 1911 framed guns, and the custom race guns in that caliber. Why have a new 9mm variant when what we really think we know we want is a greater selection of guns chambered in .38 Super?
Click to expand...

I'm not sure where you saw anything about the purpose of the exercise being to make a hotter 9mm round. In fact, they started out with Lapua .38 Super cases which they then trimmed down to 9mm Luger case length.

The other thing you might have missed is that the round is supposed to work in 9mm Luger guns, from my understanding. It doesn't require firearm manufacturer support in order to be able to be used.

I don't see a ton of purpose to the cartridge given that it seems most 9mm Luger firearms don't have nosedive issues, but there's no need to criticize it for things it isn't trying to be.
 
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