I have a Stevens 44 in 25 auto. It's a parts gun, I used a .25 RF Stevens barrel that was set back and chambered in. 25 auto. Since the 25 auto has a semi rimless case, the extractor was left a little proud of the chamber with careful hand fitting. It's a little tricky loading a round in the chamber, but the cartridge is short enough to insert the round past the extractor and get the extractor behind the rim so the action will close. Of course the barrel has a .257 groove so I use bullets as cast from a 252435 mold,which are likely a little under size. It shoots okay although I haven't shot it much. I think a .25 auto would work fine in a favorite.