I have a Super Redhawk, I believe built by Cylinder and Slide before Ruger started to produce the Alaskan. It’s .454 with some black cerakote-ish finish, bobbed hammer, action job, fixed sights, blah blah blah.
https://cylinder-slide.com/PDFarticl...Hawk-Final.pdf
Shooting .454s in it is absurdly uncomfortable, but .45 Colt, even warm loads, are very manageable.
I often keep loaded with Underwood 45 Colt full wadcutters.