ANYONE LOAD 8X58R (DANISH)

[HighlandLofts]

A friend back east bought an old rolling block rifle, caliber unknown.
He bought some serrosafe and made a cast plug of the chamber and we think it is 8x58R.
Does anyone reliad for this caliber?
If so I would like to buy a mock pice of ammo for this caliber so he can try it in the chamber.
Just a case with a bullet seated, no primer, no powder.
After we find out what it is then I can buy the proper fies f or it.
The cases can be made from 45/70, 45/90 or from a belted magnum.
Regular 8x58R brass is expensive.
I have been researching on resizing for this caliber.
The 45/70, 45/90 cases the rim needs to be turned down to fit in to the chamber.
The 45/70 works but the neck will be a little short.
45/90 works the best, you need to trim the case down to the proper length.
The belted Cases, 7mm mag, 300 mag you need to turn the belt off so the case will fit into the chamber. The ejector will not fully eject the case. It will come out a little bit, then you need to pull it out of the chamber.
And the cases should be Annelled before resizing and trimmed as you go .
A set of RCBS 8mmX58R Dies run around $100.
Once we see if it is the right caliber I will buy the dies and get to work on the project.

Any help will be greatly appreciated.

 

[ISS]

I have a Krag-Jorgenson bolt rifle. Did not have to trim the 45-90 brass down.

 

[Fire Dog]

A friend back east bought an old rolling block rifle, caliber unknown.
He bought some serrosafe and made a cast plug of the chamber and we think it is 8x58R.
Does anyone reliad for this caliber?
If so I would like to buy a mock pice of ammo for this caliber so he can try it in the chamber.
Just a case with a bullet seated, no primer, no powder.
After we find out what it is then I can buy the proper fies f or it.
The cases can be made from 45/70, 45/90 or from a belted magnum.
Regular 8x58R brass is expensive.
I have been researching on resizing for this caliber.
The 45/70, 45/90 cases the rim needs to be turned down to fit in to the chamber.
The 45/70 works but the neck will be a little short.
45/90 works the best, you need to trim the case down to the proper length.
The belted Cases, 7mm mag, 300 mag you need to turn the belt off so the case will fit into the chamber. The ejector will not fully eject the case. It will come out a little bit, then you need to pull it out of the chamber.
And the cases should be Annelled before resizing and trimmed as you go .
A set of RCBS 8mmX58R Dies run around $100.
Once we see if it is the right caliber I will buy the dies and get to work on the project.

Any help will be greatly appreciated.

Many year ago I had one of those rolling blocks, a Remington in 43 Spanish though I had been told that it was a 45/70 when I bought it.
You are right about the 45/70 rim being too thick and initially I had just carefully filed and sanded the base till it fit but later had a gunsmith cut the extractor and end of the chamber inlet just enough to let me use unmodified 45/70 brass.
The next issue was that because someone had cut down the barrel with a hacksaw the muzzle was not square so I also had that crown restored at the same time as the relief cut to the extractor/chamber cut.
Finally, since I was using cast bullets {I had a 350gr & 500gr} my Star sizer/lubricator die which was .452” needed to be honed out to .456” because the bore was for the original Spanish cartridge and would not stabilise the .452”.
Once that work was done it was a lot of fun to take out to the desert and shoot long distance. There was one hill that had a big light colored patch and by using the ladder rear sight I could land one on the patch 3-4 times out of five times. Big cloud of dust could be seen when that 500 grain landed. I could fire the shot and bring the rifle down and wait momentarily before impact…. It did not start out very fast but it didn’t slow down very much either.
There are two versions of the 43 Spanish cartridge, one being a bottleneck and the other a straight wall, mine was the straight wall one, a 43 Spanish Reformado (11.4x57mmR Reformado) hence the suitability to use 45/70 brass as is after opening the breach and extractor just slightly to accommodate the thicker rim of the 45/70, that and needing a larger than .452” projectiles.

.43 Spanish - Wikipedia

en.wikipedia.org

 

[HighlandLofts]

My friend is looking forward to shooting this rifle once we figure out what caliber it is and get some ammo made up for it.
New to you guns are always fun. Once we get the right caliber then the fun begins making the reformed cases up, loading them and figure out the right load data for it.
Thank you both for the reply.
I really haven't been on this forum much but am planning on getting more involved.

 

[SteveUrban]

I use 8X 56R cases to form the 8X 58R cases. Once fire formed, I use a 8 mm Lebel to neck size with. 22 grains of 4227 with a 205 grain bullet is my best load.

 

[Remingtonroller*]

8x58R brass is extremely expensive so like Steve U , I use 8x56R and it works just fine.

 

[HighlandLofts]

Would either one of you be able to make one dummy round up so we can see if it works in his chamber?
Using the 8x56r cases makes sence and is very affordable. We would like to try a dummy round in it before we spend $65 on the brass and a $100 on the 8x58 dies.