There was a very good thread here on ASSRA where we discussed the Type 33 and 33a Husky rollers a lot. But I just tried finding the old thread with no luck. 
I own a Type 33A in 9.5x47R that's very close to .38-55 and I use that brass and dies to load for mine. Mine needs smaller diameter bullets so I use .376" bullets in my slightly shortened cases. I'd guess yours needs to be slugged to know exact groove diameter, and a chamber cast done to get an idea of what donor brass will work. Likely .30-30, .32-40, or .32 Win. Spl. brass may all work once you know the length and shape for sure.

Here's another link that has some info also:
(You need to Login or Register to view media files and links)

I have one that I really need to do a chamber cast on, plus slug the bore.

I’m fairly sure mine is a 9.3x57R, otherwise known as the 360 2 1/4, but all that remains to be seen.

I will have to dig out photos, or perhaps take a few new ones. 

It is very petite and elegant in comparison to a full size rolling block.

I saw that rifle at auction and thought it was very nice.  Considered bidding on it but bought a Ballard earlier.  Very nice rifle hope it shoots as well as it looks.
Charlie

Just found some more info.
Calibers: 5.6x35R Vierling (possibly also listed as 6x36R);
6.5x42R; 8x42R; 8x57R(360); 8x58R Sauer; 9x47R; 9.15x57R(360) - more commonly known as 9.3x57R(360); 9.5x47R; 10x47R; and 10.5x47R.
Most common were probably 8x57R(360) and 9.3x57R(360). All were originally black powder loaded smokeless later. The CIP Pmax figure for the 8x57R(360) equates to 35,534 psi.
Here's what the checkering originally looked like:

Beautiful rifle, in much better condition than mine.

I thought mine was chambered in 8X57R - 360 (and actually bought the - very expensive - reloading tool to then discovered it actually was in 8X58R Sauer...

A chamber cast (which I sould have done) is a must...

both can be tested with 32-40 formed brass, but best results will need transformed 9.3X72R.

(You need to Login or Register to view media files and links)

(You need to Login or Register to view media files and links)

Hi Freebird. Good points, and your rod is just like mine. Could you describe the differences for everyone between the 8x57R(360) and the 8x58R Sauer. Vall, you may be sorry;-)

8x57R - 360 is a necked down 9.3x57R - 360, so kinda botleneck (i.e. fatter under the neck)

I believe it was introduced in 1896 as a smokeless round with jacketed bullets.

8/58R Sauer is an original BP proposition using the same size bullets than the previous one but with a straight tapered case (very much like a longer 32-40).
It uses lead projectile.

the latter(sauer)  can be chambered (and fire formed) in the former (8x57R - 360), but as I have unfortunately discovered, it's not possible the other way round 

Ah! a gunsmith friend was selling his extensive collection of RCBS reloading tools, so I was able to acquire both sets in the end -might have to look for a gun in 8x57R - 360 now that I have the tools... any excuses really)

(You need to Login or Register to view media files and links)

(You need to Login or Register to view media files and links)

(You need to Login or Register to view media files and links)

(You need to Login or Register to view media files and links)

I hope these links are clickable  , i am hardly used to the forum interface...

It is interesting that a lot of data is out there for the 8x57R(360) and the 8x58R Sauer. There is mention that the rifles for these cartridges may use the old .318 diameter or the later .323. This page has interesting postings showing how many different ways the 360 case cartridge was called:
(You need to Login or Register to view media files and links)
This link has technical specs and points to loading data:
(You need to Login or Register to view media files and links)
All this reminded me that back in the 70s I had a drilling with an 8x57R(360) rifle component. No clue what I shot in it.

If you use .32 Win. Spl. or .30-30 brass it's shorter and wont require any trimming. Plus either are much cheaper and easier to find.

Fields wrote on Feb 7^th, 2025 at 8:39pm:


I’ve never heard that before. I know Remington made them in 7mm Mauser and 8mm Lebel, and I recently read that they made some in 7.92x57 which I had also never heard before. There was also mention of a few possibly being made in .303 British, which was a revelation to me.

But as far as Husqvarna doing so, not that I know of.

Husqvarna? or Denmark refurbished the large military "Remington" rolling blocks to hunting style rifles in 8x58R Danish but I don't recall any other calibers. Rimless calibers would have been challenging. Of course, Scandinavia already had the 6.5x55 Krags.

Here's an example of a military rolling block sporterized to 8x58R Danish; (You need to Login or Register to view media files and links)
Simpson always has a lot of them.

Progress Report 2: 830singleshot made a lathe fixture from a lag bolt and a sandpaper disc which greatly facilitated thinning the rims of my brass. 0.015" was removed from the face of the rims and each piece was verified in the rifle. A fireforming load of Bullseye topped with cornmeal capped with floral foam was loaded. A marked soda straw and a 25 caliber jag on a pistol cleaning rod  transferred the cornmeal and compacted it with little spillage. Fireforming proceeded with nice looking ersatz 8X58R Sauer cases resulting. The amount of cornmeal charcoal in the barrel was impressive, but cleared easily with moose milk patches. Cases were reprimed with a redecapper and 35 gr of 3Fg Swiss which was determined to give proper seating depth, was transferred to each case with a volumetric powder measure. 170gr soft cast bullets of 0.323" diameter from Hunters Supply were hand lubed with Emmert's lube and thumb seated without neck tension for initial testing. As expected, this proved to be a very mild load with satisfying plumes of white smoke. Cases obturated perfectly with no staining of the brass. 50 meter accuracy was good but fouling management was critical. A wet, damp, and dry patch after each shot was required to make hits at 50 m. Clearly, more load development is necessary. Cleaned cases measure 54.6mm. The web is not fully expanded to chamber dimension, but I believe these cases will suffice. 

This rifle has the S, 0.323", bore and a 30" twist. Guidance on charge and bullet (s) gratefully accepted.

Found a set of dies.

At last!  After eliminating quite a number of 8mm bullets that all keyholed at close range and barely hit the berm at even moderate distance, the purpose of the 76mm twist has been revealed: OO Buckshot over shotgun powder works.

I can't speak for any but the one I have, but the C.I.P. drawing calls out a 0.318 groove diameter and a 196 grain round nose jacketed soft point bullet. Mine has a 0.323 bore and the chamber neck is very generous indeed, requiring some resizing to get any purchase on a 0.323 cast bullet. I've tested numerous cast bullets from 170 grains to 223 grains. All with very poor to zero accuracy, but no leading. It is possible that my ersatz brass is at least a contributing factor, the final length is 54mm instead of 58.5mm in the C.I.P. drawing. Also, my wall thickness is 0.0095" rather than 0.013" that appears to be required. A CH4d sizing die reduces the neck to take a 0.318" bullet in the parallel neck. An M-style expander allows seating a 0.323" bullet far enough out to reach the lands but there was no meaningful improvement in results.

What's really perplexing is that the 76cm twist bore is very finely done with six lands and grooves and a perfect bore.  00 buck (0.330") finger seated over enough Unique to leave a clean bore returned groups about 6 MOA at 25m in a freshening crosswind. Greenhill says a maximum 100 grain bullet should stabilize. Buffalo Arms catalogs Sauer brass reformed from 303 British that are out of stock. I won't attempt swaging the web of 303 to fit then thinning the rims, but may buy a few to see if it's worth going further or not.