my general point was that everything a 44 mag or 45 colt can do , the 454 can do too.
Well, sort of. I can name the number of handguns chambering the .454 on one hand. The FA 83, Ruger Super Redhawk, Ruger Super Blackhawk (Bisley), MRI BFR and the Taurus Raging Bull. That's it. Also worth nothing that only the Super Redhawk is a regular catalog item for Ruger and only with a 2.75" or 7.5" barrel. That's not much selection and they are ALL stainless steel. That right there cuts quite a few buyers. I know that I've probably bought my last stainless steel handgun if I can avoid it. None of them are what I'd call a "packin' pistol" but I don't really want to be shooting 50-65,000psi loads out of one anyway. For hunting guns, you can probably find what you want within that limited selection. I'm going to provide some examples of what the .44Mag can do that the .454 can't. Before I get started and anyone starts thinking I'm bagging on the .454, I own three of them, including an FA 83 with $1000 worth of grip work. However, I could very easily live the rest of my life without them and hunt everything I want to hunt, from here to the Zambezi.
It can't be found in a $600 Bisley Vaquero with a blued finish. I can sling a 355gr at 1100fps out of this thing. Where is the .454 equivalent? Even if it existed, what is the .454 going to do that it can't?
It can't be found in an Old Model Super Blackhawk.
It can't be found in your basic run of the mill Bisley. For about the cost of a BFR, I had this $400 Bisley tuned, gussied up and restocked.
It can't be found in the Bisley Hunter, the best solution if you want to scope a Ruger single action.
It sure as hell won't be found in the svelte Uberti Callahan, which is barely heavier than an SAA. Perfectly fine for standard type .44 loads, though the cylinder is too short for much over 300gr.
If you like N-frames like the imminently packable Mountain Gun, you'll have to make do with the .44Mag. There are no 40oz DA .454's and who would want to shoot one anyway?
Somehow I don't think a black oxide Raging Hunter is going to have the same appeal as a model 29. If a 250gr at 1200fps is all I need, what's the point of a .454 anyway?