Author Topic: I have an idea for a new autoloading cartridge.  (Read 6785 times)

Captain O

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I have an idea for a new autoloading cartridge.
« on: October 08, 2015, 03:13:21 PM »
I propose a 7.95 X 19 cartridge. (.327 Auto Mag.).

Don't be so quick to dismiss this idea; I'm not "reinventing the wheel", either.

Advantages:

a) .312" bullet dia.. This is common and available in various and sundry bullet weights.

b) Capable of very high velocities (1400-1600 fps).

c) The platform is prolific. The 9mm is omnipresent!

d) Large capacity.

e) Low recoil.

f) Excellent penetration capabilities.

g) At these barrel lengths, hollowpoints (up to 135 grains) will likely expand.

h) A standard bullet weight of 98 grains would provide a marvelous "compromise" between penetration and expansion.

i) A barrel exchange with a stock 9mm Parabellum pistol would immediately convert it to the new cartridge; no other alterations are necessary.

j) Brass can be formed from the 9mm Parabellum.

k) The .32 NAA is good in shorter-barreled pistols. This cartridge will be better served in as "service-sized" handgun.

l) Georg Luger laid the "groundwork" in 1905 (110 years ago) by creating the .30 Luger. While the .30 operated at much lower pressures, the .30 Tokarev (7.62 X 25) paved the way for this concept as well.

This idea came from the idea of the .32 NAA and using the 9mm as a "parent cartridge" as opposed to the .380. THIS IS NOT TO BE USED AS A "POCKET PISTOL" CARTRIDGE! So many shooters will seek to "test their manhood" (read: recoil tolerance) by putting this cartridge into a pocket-sized pistol, then compain because it; didn't yield the desired velocities; was too loud and was too abusive to shoot. Tough. "Stupid is as stupid does".

I'm seeking superior penetration, mushrooming, (on upset of hollowpoint bullets) and accuracy. (.32 caliber bullets in both revolvers and autoloaders are well-known for their pinpoint accuracy).

This is just a notion that's been bouncing around inside my head for quite some time.
Captain O

"The Administration of Justice should be tempered by mercy, but mercy should never interfere with the true Administration of Justice".- Captain O

"Living well is the best revenge". - George Herbert

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sqlbullet

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Re: I have an idea for a new autoloading cartridge.
« Reply #1 on: October 09, 2015, 02:04:11 PM »
Since this is a 10mm forum, I gotta ask...Why not go full monty for a 7.95X25 based on 10mm?

Captain O

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Re: I have an idea for a new autoloading cartridge.
« Reply #2 on: October 09, 2015, 02:47:05 PM »
I have a Model 20 and four other handguns in 10mm Auto. I want to see something done for the 9mm crowd as well.
Captain O

"The Administration of Justice should be tempered by mercy, but mercy should never interfere with the true Administration of Justice".- Captain O

"Living well is the best revenge". - George Herbert

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DM1906

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Re: I have an idea for a new autoloading cartridge.
« Reply #3 on: October 09, 2015, 03:27:49 PM »
Since this is a 10mm forum, I gotta ask...Why not go full monty for a 7.95X25 based on 10mm?

This. However, 10 to 7.95mm may be too far a stretch, unless significant case neck work is planned.

The .32NAA is a poor performing "pocket pistol" round, due almost entirely to the very limited case capacity. Basing it on 9mm will improve that unavoidable factor very little, if any. Chamber and action designs are a much greater player than case design, in the pressure tolerance equation. .38 Super would be a better base candidate, if you are set on that chambering.

[edit]
Add to that, the 9mm case is tapered, while the .38S (as well as other similar size autos) is not. This may or may not present additional issues.
« Last Edit: October 09, 2015, 04:16:26 PM by DM1906 »
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The_Shadow

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Re: I have an idea for a new autoloading cartridge.
« Reply #4 on: October 09, 2015, 03:53:17 PM »
I am surprised LWD hasn't released a barrel chambered in the 7.62 x 25 Tokarev, with all the surplus ammo...
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DM1906

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Re: I have an idea for a new autoloading cartridge.
« Reply #5 on: October 09, 2015, 04:17:52 PM »
I am surprised LWD hasn't released a barrel chambered in the 7.62 x 25 Tokarev, with all the surplus ammo...

Novel idea. I'll ask the next time I'm on the horn with them.
Life's tough. It's tougher if you're stupid. -- The Duke

The_Shadow

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Re: I have an idea for a new autoloading cartridge.
« Reply #6 on: October 09, 2015, 04:28:16 PM »
The COAL (Overall length of 34.0 mm / 1.34") is on the long side for the magazines so that may be the issue with a conversion for factory ammo, but loaded shorter could be a great adaptation and a perspective.

But then again a 10mm case necked down to the to accept the 7.62 Tokarev would be a nice wildcat.  But the issue would be bullets to be able to load...
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DM1906

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Re: I have an idea for a new autoloading cartridge.
« Reply #7 on: October 09, 2015, 04:43:47 PM »
The COAL (Overall length of 34.0 mm / 1.34") is on the long side for the magazines so that may be the issue with a conversion for factory ammo, but loaded shorter could be a great adaptation and a perspective.

But then again a 10mm case necked down to the to accept the 7.62 Tokarev would be a nice wildcat.  But the issue would be bullets to be able to load...

No problem with the bullets. Plenty of .30 Carbine to choose from. The last lot of Tokarev's were pretty short, 1.255", although the max spec. is 1.350". 85 gr, non-corrosive. I never had a pistol to shot them, but they were ultra-cheap fun in the Mosin-Nagant.
Life's tough. It's tougher if you're stupid. -- The Duke

The_Shadow

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Re: I have an idea for a new autoloading cartridge.
« Reply #8 on: October 09, 2015, 04:51:29 PM »
Standard 0.308" bullets would be small, if they go with the 0.310" but it might offer some uses...
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DM1906

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Re: I have an idea for a new autoloading cartridge.
« Reply #9 on: October 09, 2015, 04:56:30 PM »
Pretty sure they're .308, same as the .30 Mauser.
Life's tough. It's tougher if you're stupid. -- The Duke

Captain O

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Re: I have an idea for a new autoloading cartridge.
« Reply #10 on: October 09, 2015, 05:01:30 PM »
I own a Yugo M57 in 7.62 X 25 (.30 Tokarev) and it is a WONDERFUL pistol! The only problem is with it's "battlefield" sights. They can be augmented to improve the sight picture.

The only reason I hadn't suggested using the .38 Super as a platform for the new cartridge, is because it isn't as popular as the 9mm Luger Perhaps it would be a better platform. As accurate as the .32 caliber bullets are, the round would serve rather well in both the field and at home.
« Last Edit: October 09, 2015, 05:03:24 PM by Captain O »
Captain O

"The Administration of Justice should be tempered by mercy, but mercy should never interfere with the true Administration of Justice".- Captain O

"Living well is the best revenge". - George Herbert

This post is approved by Arf, The Wonder Chicken.

DM1906

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Re: I have an idea for a new autoloading cartridge.
« Reply #11 on: October 09, 2015, 05:41:23 PM »
You should have a 7.62x54R to compliment that pistol. Get your hands on some adapter bushings, and shoot the x25 rounds through both. Lots of fun, cheap, and really effective on varmints w/o the mule kick and noise.
Life's tough. It's tougher if you're stupid. -- The Duke

Captain O

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Re: I have an idea for a new autoloading cartridge.
« Reply #12 on: October 09, 2015, 09:29:58 PM »
You should have a 7.62x54R to compliment that pistol. Get your hands on some adapter bushings, and shoot the x25 rounds through both. Lots of fun, cheap, and really effective on varmints w/o the mule kick and noise.


This is all well and good, but the "thread drift" means it is losing it's direction.

Back to the main topic, please.

Captain O
Captain O

"The Administration of Justice should be tempered by mercy, but mercy should never interfere with the true Administration of Justice".- Captain O

"Living well is the best revenge". - George Herbert

This post is approved by Arf, The Wonder Chicken.

rw

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Re: I have an idea for a new autoloading cartridge.
« Reply #13 on: October 10, 2015, 12:00:34 AM »
I am surprised LWD hasn't released a barrel chambered in the 7.62 x 25 Tokarev, with all the surplus ammo...

Novel idea. I'll ask the next time I'm on the horn with them.

Cheap surplus for that dried up several years ago. There has been some more to come in recently but it ain't that cheap

The_Shadow

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Re: I have an idea for a new autoloading cartridge.
« Reply #14 on: October 10, 2015, 07:12:09 AM »
Sorry about that Captain O...7.95 X 19 cartridge. (.327 Auto Mag.), What if you used the 22TCM as your parent case then necked it up?  The COAL of Overall length of 1.265 in (32.1 mm) to fit the magazine and still have enough space for powder and bullet.  The 22TCM could be a platform case to have strength and longevity.

The "10mm" I'm Packin', Has The Bullets Wackin', Smakin' & The Slide is Rackin' & Jackin'!
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