doublegunshop.com - home Forums General Discussion German & Austrian Sporting Guns @ doublegunshop.com 9 X 71 Peter Longo - update, Now cartridges

My computer skills being something less than my skill as a rocket surgeon, I cannot find any information on this cartridge. I'm not certain I even have the correct name for it. Is anyone familiar with it and if it can be formed from something existing or if it might be available?

Thanks!

Vic

The name is correct. Hope your spanish is good...:

9x71 Peter Longo

Kind Regards,
Gunwolf

Vic,
If I remember correctly, the Peterlongo series( also 8mm) headsize was more or less close to 8x57.If this is so, they could be made by turning the rim off 9.3x74R, turning new extractor groove,fireform, and trim to length.I will try to remember to check.BYW I know 9.3x74R is usually smaller than 8mm,but should fireform ok.
Mike

Gunwolf,
This cartridge is Austrian, even though the name sounds Spanish.
Mike

Vic,
The correct name is not Peter Longo but rather Peterlongo. Johann Peterlongo opened a big gunshop in Innsbruck in the 1850s and the marque existed long after his death. A Google search for 9x71 Peterlongo will give you drawings with principal dimensions, etc. I do not have any experience with this obsolete cartridge but am quite sure that the pertinent rifle must be a nice Austrian Mauser.

With kind regards,
Jani

Thanks wolf! If that's it, it is showing a rimmed version. This particular rifle is a Mauser and Jani is correct. Nothing fancy, just classic. Here it is:

http://www.gunsinternational.com/Mauser-...un_id=100387644

...and Jani, thank you for correcting me about "Peterlongo"....I knew that and did it anyway....go figger.

Mike...I know your feelings about the necessity of a lathe, well I may have a line on one from a fella at church...which would make this project imminently more doable!!! Thanks for the info and I would be pleased to know what you find out.

Vic

Vic,
The rifle looks nice and seems priced quite fairly. I hope you get it, and enjoy it!

With kind regards,
Jani

Mike,

thanks, but of course I know, just returned from his hometown Innsbruck...:-)
Spanish is the website which I posted and there, of course, it's Peterlongo!

Best Regards,
Gunwolf

Vic,
As promised, I checked the headsize. It seems the 9X71 Peterlongo headsize is also a little smaller than 8x57.This makes the 9.3X74R headsize almost perfect for the 9X71.It(COW)shows the rim as being 1 or 2 thousanths larger than the headsize, but this is within manufacturing tolerances an not enough to make the cartridge rimmed or even simi-rimmed. It is a rimless cartridge. It's great that you have a line on a lathe, let me know if I can help you.
Mike

Hey Mike..

The seller of the rifle dug through his books and sent me a fully dimensioned drawing of the cartridge with directions for forming. Either you two have the same book or the wealth of knowledge filed away in your brain is incredible and your recall even more so!!!!!! (we know that to be true anyway!!). Same directions as yours, use 9.3 X 74R case, turn off rim, cut extractor groove, size, trim and fireform. Is there a standard width/depth to extractor grooves on Mauser actions?

I asked the seller if he would hold it for me contingent on some one of us finding a parent case and a way to make it. We're there...rifle will be ordered! Thanks a bunch!!!

Vic

Vic,
Parent cases are no problem, 9.3x74R cases are easy to get.I'm sure there is a standard width/depth for extractor grooves, but the easiest way to do it would be to grind a tool to match the groove in a sample case( 8mm,30-06,etc).It's not very critical anyway.Be sure to slug the bore before ordering special bullets, a lot of 9mm rifles take standard .358"bullets.
Mike

Thank you sir! Duly noted!

sharps4590,
I think this will be a great rifle.
I had it bought but ended up bailing on the deal simply because of a miscommunication between my FFL holder and Salters.
In the interim, I ended up buying a double rifle so let it go.
Let us know what the bore slugs to. May be .350".
I know this will be one rifle I regret letting go... 100% a good deal!

I think you're right, I certainly hope so. Being of the selfish bent I'm glad you ended up passing on it....lol!!! It should go out Monday and be here by late week and as soon as I slug the bore I will post it.

It's here....it's staying here...and I just got home so no pictures just yet.

Huvius...I believe I would take another double rifle over this Peterlongo mostly because I have a weakness for doubles. This is one nice Mauser though.

And the barrel slugs dead on .355.

Mods, if these are too big I apologize....I am not very techy. Just getting them posted is quite a feat! Please feel free to resize or delete if they are.

I'll do it in two posts....Isn't that supposed to be better for "stuff"?

Vic,
you are really having good luck now.Let us know how wour loading works out.
Mike

I will. There's a Grizzly 4000 and the stand it goes on with 3 and 4 jaw chucks, 3 live centers, 4 dead centers, 3 different drill type chucks for the tail stock, several tools and tool holders and a bunch of stuff I have no idea what it's for. But it is by golly sitting in my shop!!!

Vic,
Your lathe is well tooled with the most expensive "set up", and what ever else you may need won't be expensive or hard to make.
Mike

With a lot of help and guidance from Mike Ford I finally have shootable ammo for the rifle. Below, from left to right, a 9.3 X 82R I put in there for a different web site. Next two are fired 9 X 71 cases, a cartridge loaded with 40 gr. IMR 4350 and a Hawk 225 gr. bullet, next a newly formed as yet unfired case and a 270 WCF for comparison.

Vic,
That sure didn't take long. Good job.
Mike

Sharps4590,
Clearly, you are a better custodian of this rifle...
I don't think I would be that far along in the case making for...oh...a few years...

So...tell us, how does it shoot? Is there any other cartridge capacity and bullet wise that you can use as a benchmark for load development?

Thanks Mike. Being anxious to shoot it and having good advice helped immensely....more the help than the "anxiousness"

Huvius, I don't know that I'm any better a custodian. More impatient perhaps...lol

It shoots...very good. I wanted to say "magnificently" but that seemed a bit strong for having only put fireforming loads on paper. I wasn't really shooting for group, more just plinking at stumps and rocks, learning the feel of the rifle but I did try a 4 shot group at 50 yards. They all went under an inch and I wasn't off the bench. I was shooting, kneeling and leaning across my bench, holding the rifle. All the ones I did put on paper were about 6 inches high with the Lyman aperture set at its lowest level but they were pretty mild loads. I'm hoping these next ones with more "oomph" will drop into the center of the black.

Axel has offered some historical info on the cartridge but he was unable to find any velocities. If I remember correctly he said that pre-WWI they were not often published. I assume because they didn't really have honest velocities. Axel mentioned early gun writers using a typewriter for a chronograph. From what he implied they read high. He and I had a similar thought in that 35 Whelen data could be used. At first I thought it and Axel believed it. Now I believe it too! I also have an acquaintance who has a program for calculating optimum charges in cartridges by using the volume in grains of water, bullet weight, bullet length, COAL and a couple pieces of data I forget. He ran 6 or 9 loads for me with 3 bullets and the optimum loads, lower pressure at 35K-40K, fell about in the middle of the Whelen data. They were for 200, 225 and 250 gr., .356 bullets. I have some of each loaded and ready to go. I backed off 2 grains and will ladder up the best load while watching for pressure signs. Supposed to rain for the next 3 days...and it is deer season here...so it might be a few days before I can really wring it out.

Mike and that same friend also suggested swaging bullets down in my sizer/luber and that worked beyond my wildest expectations. I would never have thought the RCBS tool capable of it. .358 bullets ran through a .356 die and I'm good to go. I am confident that if this cartridge was loaded to it's upper limit it would be a real thumper....on both ends.

Vic

Vic,
I would think you could load to at least 8x57IS pressures( or 7x64) without any problems, and not limit yourself to 35-40K.
Mike

As my e-mail is on the fritz I'll post this here. I had a local gunsmith install a taller front sight on the rifle, (he did a fine jog too!), and I received it back last night, the 2nd. I had some loads ready to go so when I got home from work I grabbed 5 of them and headed for my bench. 4 rounds later I had a nice, round 3 shot group under an inch chewing the X-ring away. The first shot was a bit high and from 50 yards I calculated 4 clicks down and the second went into the X ring. I saved the last round for a "reactive" target and it busted a rock into dust at about 75 yards, leaning off a tree for a rest.

Now, when this storm passes I'll break out the chrono and see where it is!

Vic,
Great, let us know how it works out, but don't miss the game Sat. doing it.
Mike