I've only shot one .454 in my life, a scoped Freedom Arms 6" or thereabouts. It kicked a lot less than my .44 mag Mtn Gun. Probably a result of more weight + better grips.

As far as some of the other comments go, I think having your rifle and pistol shoot the same round can have its advantages. And if you are going to go that route, the .454 makes sense because of its greater power. Add to that the fact that .45 LC can be fired out of it also. It would not be my first choice but it ain't half bad either. <img src="/images/graemlins/cool.gif" alt="" />