7,65mm Luger - Nambu T 14

DonVoigt · 01-20-2017, 02:06 PM

I've been thinking about this combination for a few years, and got a little bored with wood working on the Erma boxes over the holidays-so.... I decided to add a take off 7,65mm Luger barrel to a spare T 14 receiver with poor bore.

The combination "works", I had it out for test firing this past week.

The original barrel was cut from the T 14 at the receiver chamber-barrel transition point. The receiver then bored and threaded to 18mm x 20 TPI of the luger barrel.

The barrel flange was "adjusted" to headspace the barrel to the T 14 bolt; the extractor cut then made and the barrel secured by crush fit with a little loctite added.

The original T 14 extractor and ejector work fine; the magazine lips needed to be tweaked in a little to hold the slightly smaller luger cartridge within the magazine.

I wondered initially about the "recoil" of the luger round, since it is a little hotter by fps; and the 8mm Nambu is often spoken of as "weak".

First ammo I tried was Fiocchi .30 luger, it would not lock the bolt open on the T 14/.30- same problem as I have had with some .30 lugers and this ammo.

Next tried Privi Partizan .30 luger, and it worked fine, cycled and held the bolt open as it should; which is similar to my experience with it in a .30 luger.

So it seems with this particular T 14 and its springs, the recoil of the 7,65mm luger cartridge is quite similar to the original 8mm Nambu.

rhuff · 01-20-2017, 03:05 PM

I love seeing and hearing about these types of "conversions". So glad to hear that your Nambu now has a new outlook. I have been involved with caliber changes over the years, but none as extensive as yours.

Bill_in_VA · 01-20-2017, 03:50 PM

So would this be a "Gerpanese" pistol?
��

kurusu · 01-20-2017, 05:02 PM

Always knew them Germs and Japs were in cahoots.

DonVoigt · 01-20-2017, 05:07 PM

Quote:

Originally Posted by Bill_in_VA

So would this be a "Gerpanese" pistol?
��

No Bill,
it is all American now.

kurusu · 01-20-2017, 05:13 PM

Afterthought. Too bad you didn't have/used a standard .30 barrel.
You would have a more harmonious outcome, me thinks.

Edward Tinker · 01-20-2017, 05:39 PM

Gives an a very interesting look and easier to come up with 30 luger than 8mm nambu (the stuff I have used by 'mr nambu' was disappointing to me. And my Midway boxes are too expensive to shoot !

Ed

DavidJayUden · 01-20-2017, 07:32 PM

the stuff I have used by 'mr nambu' was disappointing to me

Why disappointing?
dju

DonVoigt · 01-20-2017, 08:19 PM

Quote:

Originally Posted by kurusu

Afterthought. Too bad you didn't have/used a standard .30 barrel.
You would have a more harmonious outcome, me thinks.

The only thing non-standard is the front sight! Normal 3 7/8" 1920 commercial bbl.

A thin 4 5/8'' bbl would look nice, but they are pretty scarce and I would likely not sacrifice one for a "fun" project.

DonVoigt · 01-20-2017, 08:26 PM

Quote:

Originally Posted by Edward Tinker

Gives an a very interesting look and easier to come up with 30 luger than 8mm nambu (the stuff I have used by 'mr nambu' was disappointing to me. And my Midway boxes are too expensive to shoot !

Ed

Yes, easier to find and cheaper- easy to like!

I've had ok results with Mr. Nambu's 8mm- but others have not.
I think he had some problems at one time and changed his load, then had to change it back- or some such .

ithacaartist · 01-20-2017, 09:11 PM

Don, don't forget... A pencil-tapered barrel and high, square sight block lie within the "meat" on a standard configuration bbl!

DonVoigt · 01-20-2017, 10:49 PM

Quote:

Originally Posted by ithacaartist

Don, don't forget... A pencil-tapered barrel and high, square sight block lie within the "meat" on a standard configuration bbl!

Yes,
but my barrel stretcher is broken!

sheepherder · 01-20-2017, 10:51 PM

Interesting conversion!

tomaustin · 01-20-2017, 11:18 PM

I think you are gonna catch hell from "Zorba, the Greek" for butchering a Nambu...!!!!

DonVoigt · 01-21-2017, 12:19 AM

Quote:

Originally Posted by tomaustin

I think you are gonna catch hell from "Zorba, the Greek" for butchering a Nambu...!!!!

I doubt it, the Nambu now has a new lease on life and an "alter ego"!

K.Wilhelm · 01-21-2017, 10:30 AM

Don- very interesting! When do you anticipate going into production? Bill

DonVoigt · 01-21-2017, 10:57 AM

Quote:

Originally Posted by K.Wilhelm

Don- very interesting! When do you anticipate going into production? Bill

Around the 10th of never.

kurusu · 01-21-2017, 12:13 PM

Quote:

Originally Posted by DonVoigt

Around the 10th of never.

You could have said the 30th of February.

At least it's a real month.

rhuff · 01-21-2017, 02:00 PM

To me, this conversion has changed it from a safe queen that may get shot occasionally, to a regular range gun that can be enjoyed and shown off at the range......a win-win in my way of thinking......but I am a shooter, not a collector.

Zorba · 01-25-2017, 04:58 PM

Quote:

Originally Posted by tomaustin

I think you are gonna catch hell from "Zorba, the Greek" for butchering a Nambu...!!!!

Naw - at least he can now find ammo for it!

I've shot 50 rds of MrNambu ammo - had one slight hangfire of about 1/2 second, but otherwise was OK. He seems to have dropped off the face of the earth, I was going to have him reload my brass, but his email (as posted on his website) no longer works. I'll probably just have to get the stuff to reload them myself.

01-20-2017, 02:06 PM	#1
DonVoigt User Join Date: Apr 2015 Location: near Charlotte NC Posts: 4,681 Thanks: 1,442 Thanked 4,350 Times in 2,040 Posts	7,65mm Luger - Nambu T 14 I've been thinking about this combination for a few years, and got a little bored with wood working on the Erma boxes over the holidays-so.... I decided to add a take off 7,65mm Luger barrel to a spare T 14 receiver with poor bore. The combination "works", I had it out for test firing this past week. The original barrel was cut from the T 14 at the receiver chamber-barrel transition point. The receiver then bored and threaded to 18mm x 20 TPI of the luger barrel. The barrel flange was "adjusted" to headspace the barrel to the T 14 bolt; the extractor cut then made and the barrel secured by crush fit with a little loctite added. The original T 14 extractor and ejector work fine; the magazine lips needed to be tweaked in a little to hold the slightly smaller luger cartridge within the magazine. I wondered initially about the "recoil" of the luger round, since it is a little hotter by fps; and the 8mm Nambu is often spoken of as "weak". First ammo I tried was Fiocchi .30 luger, it would not lock the bolt open on the T 14/.30- same problem as I have had with some .30 lugers and this ammo. Next tried Privi Partizan .30 luger, and it worked fine, cycled and held the bolt open as it should; which is similar to my experience with it in a .30 luger. So it seems with this particular T 14 and its springs, the recoil of the 7,65mm luger cartridge is quite similar to the original 8mm Nambu. Attached Thumbnails __________________ 03man(Don Voigt); Luger student and collector. Looking for DWM side plate: 69 ; Dreyse 1907 pistol K.S. Gendarmerie

01-20-2017, 03:50 PM	#3
Bill_in_VA User Join Date: Nov 2013 Location: Southwest Virginia Posts: 373 Thanks: 772 Thanked 554 Times in 198 Posts	So would this be a "Gerpanese" pistol? �� __________________ John 8:32 reive (riːv) vb (Military) (intr) dialect Scot and Northern English to go on a plundering raid [variant of reave] ˈreiver n e.g., " Some view the Border Reivers as loveable rogues."

01-20-2017, 09:11 PM	#11
ithacaartist Twice a Lifer Lifetime Forum Patron Join Date: Mar 2011 Location: Atop the highest hill in Schuyler County NY Posts: 3,347 Thanks: 7,285 Thanked 2,579 Times in 1,366 Posts	Don, don't forget... A pencil-tapered barrel and high, square sight block lie within the "meat" on a standard configuration bbl! __________________ "... Liberty is the seed and soil, the air and light, the dew and rain of progress, love and joy."-- Robert Greene Ingersoll 1894

01-20-2017, 10:51 PM	#13
sheepherder Lifer Lifetime Forum Patron Join Date: Feb 2009 Location: ...on the 'ol Erie Canal... Posts: 8,183 Thanks: 1,400 Thanked 4,442 Times in 2,330 Posts	Interesting conversion! __________________ I like my coffee the way I like my women... ...Cold and bitter...

01-21-2017, 10:30 AM	#16
K.Wilhelm User Join Date: Jun 2013 Location: South Central Colorado Posts: 215 Thanks: 45 Thanked 109 Times in 66 Posts	Don- very interesting! When do you anticipate going into production? Bill __________________ NRA Endowment Life member Proud veteran of the Naval Security Group

01-20-2017, 03:05 PM	#2
rhuff Patron LugerForum Patron Join Date: Mar 2011 Location: Az. Posts: 2,291 Thanks: 2,709 Thanked 972 Times in 717 Posts	I love seeing and hearing about these types of "conversions". So glad to hear that your Nambu now has a new outlook. I have been involved with caliber changes over the years, but none as extensive as yours.

01-20-2017, 05:02 PM	#4
kurusu User Join Date: Sep 2007 Posts: 1,225 Thanks: 2,679 Thanked 930 Times in 509 Posts	Always knew them Germs and Japs were in cahoots.

01-20-2017, 05:13 PM	#6
kurusu User Join Date: Sep 2007 Posts: 1,225 Thanks: 2,679 Thanked 930 Times in 509 Posts	Afterthought. Too bad you didn't have/used a standard .30 barrel. You would have a more harmonious outcome, me thinks.

01-20-2017, 05:39 PM	#7
Edward Tinker Super Moderator Eternal Lifer LugerForum Patron Join Date: Jun 2002 Location: North of Spokane, WA Posts: 15,935 Thanks: 2,034 Thanked 4,533 Times in 2,093 Posts	Gives an a very interesting look and easier to come up with 30 luger than 8mm nambu (the stuff I have used by 'mr nambu' was disappointing to me. And my Midway boxes are too expensive to shoot ! Ed

01-20-2017, 07:32 PM	#8
DavidJayUden Patron LugerForum Patron Join Date: Nov 2008 Posts: 4,047 Thanks: 578 Thanked 1,414 Times in 887 Posts	the stuff I have used by 'mr nambu' was disappointing to me Why disappointing? dju

01-20-2017, 11:18 PM	#14
tomaustin Lifer X5 Lifetime Forum Patron Join Date: Sep 2008 Location: texas Posts: 708 Thanks: 87 Thanked 522 Times in 201 Posts	I think you are gonna catch hell from "Zorba, the Greek" for butchering a Nambu...!!!!

01-21-2017, 02:00 PM	#19
rhuff Patron LugerForum Patron Join Date: Mar 2011 Location: Az. Posts: 2,291 Thanks: 2,709 Thanked 972 Times in 717 Posts	To me, this conversion has changed it from a safe queen that may get shot occasionally, to a regular range gun that can be enjoyed and shown off at the range......a win-win in my way of thinking......but I am a shooter, not a collector.