.25 Stevens was a fairly common chambering for Winchester 1885 Lo-Wall single shots too. I have seen several and had an condition excellent one for a while. Got it cheap because the owner couldn't find ammo. Sold it not-so-cheap because I couldn't find any either, but did find a Winchester collector who REALLY liked it.
I don't know Remingtons well, but wouldn't be surprised if the #2 Rolling Block and the #6 were chambered for .25 Stevens, too.