There are no 475 jacketed bullets! (at least the ones I want to shoot), so cast proposition only,
although I was able to snag a supply of XTPs bullets and ammo for my two 475's. The Linebaugh is a nice cartridge.
Lot more jacketed bullet options for the 454 and then use cast for 45 Colt. (you pick up the extra ~100/1000" throat length).
Although when I spoke with one of the FA gunsmiths about the 475, he commented he would never
"pollute" it using cast

. To be honest, they are such precision machined revolvers (my 454 throat pinned out exactly at 0.4525", that I bought a Ruger Redhawk 44 magnum just to shoot cast bullets, figuring it would not care about pollution
As
@RedTag noted, the 454 is a handful, and yes, can hunt with the 45 Colt but then you have a heavy gun. So, I got a Model 97 FA 45 Colt, which is a nice dainty gun compared to the 83, albeit with a short cylinder.
I can tell you, once you get the FA, nothing else will compare! I got Ruger's and S&W's for other purposes and every time I handle one, I put them away...