Idon't know if I'm really that serious about this project. Its one of those, seems probably easier to do than it actually would be. If you wanted to convert a SA ruger 44 mag to 440 corbon, is it as easy as converting the revolver to a 5 shot and then having a new cylinder made? Also, the 440 is based on a 50 AE. Would this rebated rim work in a revolver, or would you need to do a 44/500 Linebaugh?

Like I said, in passing thoughs, it seems pretty easy (and relatively inexpensive). I'm sure there are a few things I've failed to consider.

BTT

I have done exactly what you have described and the results were not encouraging. Basically, the bottleneck case expands and binds the cylinder after every shot. Some people have had luck with bottleneck cartridges in revolvers (see Lee Martins Single Action site) but most have reported what I experienced. As an additional side note, the outside cylinder walls are mighty thin after this conversion. If you want more power lengthen the chambers, I have done that. Or, if you want to experiment, get a 5 shot 44-40 cylinder and use 454 cases for your loads. Again, no guarantee you won't get binding, but you should be better off than with the 440.