At the SCI show, Gunmaker Philipp Oliendorff had a fine break action single shot rifle on display in this chambering and I've seen it referenced by other European Gunmakers a few times since. Does anyone have any historical data or ballistic information for this cartridge? Is this an original case or is it necked down from something else?

Thanks in advance

I was able to a little searching last night and found some ballistic data. Unfortunately, I was not able to find any load data, case dimensions (or information), nor any historical data. It seems to be very similar, ballistically, to the 7x66 Von Hofe. About 100 fps faster than the 7mm Rem Mag and about 100 fps slower than the 7mm STW. I would guess in a modern falling block singleshot rifle when loaded to pressures similar to the STW, it would be very much like it and the 7mm Weatherby Magnum.

Do you know if the case is a necked down 9.3x74R or something different altogether?

Here's a picture of the Oliendorff rifle:

An obsolete and hard to find components for caliber. Ballistical similar to 7mm Rem Mag with .284 dia bullets at considerable lower pressurs adequate for single shots. No current ballistical data available. In german catalogs about 10-15 years ago still listed. Maybe available at gehmann.com in Germany. Cases might be found at Old Western Scrounger. These infos are from Cartridges of the World. I have only one cartridge as an collector item in my posession.

Greetings

Wolfgang

Thanks Johan,
Unfortunately, that was the one and only picture of Philipp Oliendorff's firearms that I took. I don't know when the rifle was made, but Oliendorff was at SCI in Reno, Nevada this year showing his wares. Very nice rifles, and even in a chambering as long as the x75R, the rifle was slim and petite. Beautiful craftsmanship.

I am assuming it is the Vom Hofe, but don't know for sure. I am interested in uncovering the development of this cartridge, would love to know when it was introduced and if it was ever offered as a chambering from any of the large gunhouses in Europe.

DPhillips



Very nice looking kiplauf. When was it made? some more pictures and info would be nice



I guess the caliber you wondering about is the 7x75R Vom Hofe Super Express ? If soo ammo can be found at



http://www.samereier.de/Kaliber/7x75R%20v.Hofe.htm



http://www.johannsen-jagd.de/seite100.pdf



http://www.huntingtons.com/CasesWalterGehmann.html



I suggest you contact Dieter Horneber or any of the three above listed companies for brass.



Dieter Horneber

Siegelsdorfer Str. 34

90768 F�rth



Telefon 0911 / 753 06 07

FAX 0911 / 76 72 49

E-Mail D Horneber@AOL.COM





Cheers

/ JOHAN

This is the 7x75R vom Hofe, no question. In ballistic terms, the cartridge always was over-estimated, and now it is quite outdated, I think. Refer to "Cartridges of the World" for basic information.
Cases can be formed from 9.3x74R, and any 7 mm bullet can be used, no problem.
I saw these rifles at SCI myself, they are new and wonderful. Mr. Ollendorf is a rather young and fine person.

Fuhrmann

Gentlemen

True is that the Vom Hofe often has a bit of blue sky in their data.

I wonder if there is anyone who heard of a wildcat 7X68R or 7X67R based on the 6,5X68R ? It would be an interesting caliber for mountain hunters

Cheers
/ JOHAN

How commom is the 8x75RS or the 30R Blaser? I think for a lightweight singleshot mountain rifle a 7x65R would be just about a perfect combination of power and recoil.
However when I saw a Blaser K-95 Stutzen In 308 [my favorite cartridge in this power class] I just had to have it.

N E 450 No2



The most popular cartridges for kiplaufs, cape guns, drillings etc should be 7X65R, 7X57R, 6,5X57R, 8X57IRS and 9,3X74R. I think the 30 blaser and 8X75RS still are fairly small compared to the other calibers.



7X65R is a very good choice and even any of the 6,5's.



Cheers

/ JOHAN

Johan, re 7x68, while I was researching the 7x75, I came across this cartridge and one called the 7mm Booboo or Bobo which was identical. Seems the ballistics quoted for the 7x68 were very similar to the 7mm STW. I think by the time you get into these case capacities, especially in a mountain rifle with a standard or light barrel, there will be problems with throat erosion if shot much.