Most levers will use a rimmed cartridge, while most of the popular semi autos out there use the auto rim, I'm sure it can be made to use the auto rim.... but you really dont see it. Also, levers are the old school of shooting. When you find them, they are in cartridges that have been around for years, which is what most people who shoot levers prefer. I would say it's one of those... it is possible, but it is the way it is type of thing. Could be done custom, if you are willing to throw down some bucks.