the 1894 Marlin is a pretty nice gun, they run between 5 and 600 i believe... might be able to find a used one for cheaper tho...

Ruger also makes a 10/22 in .44 mag, but obviously its a semi auto, im actually looking at one as it would be pretty cool IMO...

have you considered a .45-70? or .444 or. 450 Marlin?