A .454 is definitely a acquired taste. I've got Freedom Arms with a 7.5" barrel and scope. And a 6.5" Raging Bull. They both kick severly, to the point that I only shoot 10-15 rounds thru them at any time. Or else I start to flinch badly.
The one good thing about spending some range time with a .454 is it actually makes shooting a .44 mag fun and easy.