I used to have a Ruger 454 and sold it , it was the hardest kicking pistol I have ever fired. Fairly light and no comp. I picked up a smith .460 and like it alot better. I can still shoot .454 if I want. and even a Cor bon 460 doesn't kick as bad as the Ruger. Due to the weight and the good Comp on the Smith X frames they are very comfortable to shoot.
The .500 kicks hard from what I have heard but I haven't had a chance to try one out yet. Jim