I am aware that some feel the Redhawk frame is suitable for a .454 Carpenter steel cylinder. It may be, but I would like to see some more data, including endurance data.
I just don’t like the idea of hotrodding any caliber. I tend to feel if you need to firewall a caliber like .454, then you probably need a bigger gun. I don’t have a .454, but I do have 3 .500s. While I could safely load them hotter than any mortal man could ever require, I am content to load them with more modest loads, loads that exceed the power of the .44 mag and .454 and still have less recoil and blast, but that is just me. You are free to do what you prefer.