According to De Hass, Barrel shank is close to a Stevens 44. Can't speak to the cartridge.
Chuck

The shank. just about has to be for the 44 Stevens. My guess and only a guess, is that it was set back to take a inside lubed, centerfire version of the Stevens 25 RF.

Frank

The idea that the barrel is 'setback and chamber cut' for a different cartridge does seem plausible, the distance from the manufacturer name terminal period after the 'CO' to the 'spigot ' end of the octagon section is about .92 inches.

Further, on the bottom flat there is a threaded hole about 3.4 inches ahead of the same transition, or 4-5/8 inch back from the round to octagon transition.
There is also another hole in dovetail cut about 1.85 inches back from the round to octagon transition, also in the bottom flat.
The surface of the 'spigot' is not 'rusted' or not with patina, as differentiated from the resat of the barrel exterior which has a patina that appears to be old blued finish, no obvious rust on any surface.
I believe I mentioned that the barrel bore cleaned up Very Well, with shiny, smooth, interior surface and sharp rifling from chamber to muzzle. No visible pitting anywhere in it.
Best Regards,
Chev. William

BP wrote on Sep 29^th, 2013 at 1:42am:


You're right.  I checked another original barrel I have, and it has the shorter forend at about 8 1/4".  Must have been deluxe models with the longer forend.   

Hmm,  might not be set back.

dave

Previous post continued:
"Inspecting the slug with a 20 power magnifier, the rifling cut sharp edged grooves in the driving bands almost to the bullet nose diameter and the drive bands, including the 'swell' of the nose before the first driving band, showed contact with the full diameter of the barrel grooves.  It seems it would seal, and possibly shoot well even with this bullet size, if it is not reduced in diameter in the loading process.  An obvious problem with a cartridge that requires some tension on the bullet to retain it in the cartridge.

Pondering on this,  I surmise that a heel based and heel lubed bullet design similar to the Accurate Molds 31-090A, but of around .258" maximum diameter and with a .250" diameter heel would work.  The heel length should be about the same as the seated depth of a .25ACP bullet and the driving band should be about .050" long to fit the bullet in a 1.125" long ".25 Stevens CF" case and still chamber in the 1.175" cut chamber as found.
Accurate molds does not make molds below .300 bullet diameter at this time according to their web site.
The nose could be a 'bore rider design and extend into the rifling as it slugged at .250".
A bullet weight of about 67 to 75 grains would be interesting for this barrel, especially since it seems it is for the stronger Model 44 action rather than the 'Favorite' action.  The stronger action would allow loading to higher chamber pressures and resulting muzzle velocity than would be useable in the 'favorite' action even with improved strength pins and screws.

The resulting cartridge would retain the powder chamber volume to hold between 9 and 10 grains of Black Powder so could still be named perhaps ".25-10 Stevens Center Fire" and, if loaded with a nominal .251" diameter bullet, still used in the 'Favorite' action and barrel/chamber combination.

What do the other members of the Forum think of these ideas?"

Best Regards,
Chev. William

A second 2000 character post, oh boy is describing things difficult in a limited space.

Best Regards,
Chev. William

I think the only real, logical cure is to just run a 25/20 Stevens reamer in the chamber to match the roll stamp?

Frank