I screwed up the other post so I thought I would start a new one with the correct chamber size and hopefully pictures. I could make a lot of excuses for posting the wrong caliber, but I'm not.
This might be a bit easier to figure out. Thanks for the previous answers. Again a German O/U Cape gun. Is it not made after 1952 with those markings?
Last edited by Cowboy32; 03-13-2023 at 08:33 PM.
Still need some measurements to narrow it down. whats the dia. in front of the rim? I'm thinking a 30/40 Krag case might be a possible parent case with some tweaking...
2nd Amendment of the U.S. Constitution. - "A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
"Before you argue with someone, ask yourself, is that person even mentally mature enough to grasp the concept of different perspectives? Because if not, there’s absolutely no point."
– Amber Veal
"The Highest form of ignorance is when your reject something you don't know anything about".
- Wayne Dyer
Doesn't look like a rimless bottleneck chamber cast to me???
Agreed but it's the only 7.8 anything that comes up on the web. It's a start. Is the bore diameter the same?Originally Posted by SOFMatchstaff
Last edited by M-Tecs; 03-13-2023 at 10:27 PM.
2nd Amendment of the U.S. Constitution. - "A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
"Before you argue with someone, ask yourself, is that person even mentally mature enough to grasp the concept of different perspectives? Because if not, there’s absolutely no point."
– Amber Veal
"The Highest form of ignorance is when your reject something you don't know anything about".
- Wayne Dyer
8x58R Krag?
Just guessing.
I seem to remember an 8mm "straight wall" type cartridge that was loaded in the Husqvarna Model 33 rolling block rifles. I think there is a discussion of that cartridge somewhere on here.
I think I have it narrowed down to a 8x58 Sauer. Dimensions are real close. Now the hunt for brass, bullets and dies.
Concur with that assessment. Many "8mm's" made between the wars use a 7.7, 7.8 and 7.9 designation to avoid legal problems with the Armistice. When I worked with a similar cartridge in a drilling which had a 7.7 designation with a .318 groove diameter barrel I was able to get the dies and cases from RCBS. Very spendy though.
Larry Gibson
“Deficient observation is merely a form of ignorance and responsible for the many morbid notions and foolish ideas prevailing.”
― Nikola Tesla
FYI: CH4D has 8x58R Sauer reloading dies.
Just for fun I held a vernier caliper to the chamber cast image, and came up with the following dimensions.
base dia. .446
rim dia. .507
case length 2.07
bullet dia .324
By my crude measurements a .303 British case could be used with a bit of file work .
What I measure on the casting is;
base dia. - .440
rim dia. - .504
case length- 2.330
throat dia. - .323
bullet dia. - .318
I ordered 20 cases from Buffaloarms. I'll wait on the dies. Already have the .318 dia. bullets.
The fun begins!
I think you could blow out 303 Savage brass and make a short version of your brass.
I have 100 of the PPU 303 savage brass and it’s good stuff and I think is still available.
It would be about a 1/4 “ short but may work in a pinch.
Jedman
Thanks Jedman,
I have some .303 Savage cases that I may try if the other cases don't work.
Nonte recommends to use 30-40 cases and thin the rims.
Larry Gibson
“Deficient observation is merely a form of ignorance and responsible for the many morbid notions and foolish ideas prevailing.”
― Nikola Tesla
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