Crazy thought Sounds like you want a .44 magnum, then you can run the spectrum from .44spl cowboy loads to .44 mag full power with no worries. The Smith is going to be more refined and more accurate. The redhawk is going to be larger...and harder to get a good DA trigger. You will have a much easier time finding a .44 mag Redhawk than a .45 convertible.
Again, using talk-to-text in gaps at work, please forgive strange spellings, word insertions, and a general lack of editing.
It's true that the Forty Fours are much more abundant, particularly with the longer barrels. And I thought about going 44 magnum before I started this whole journey buying 45. But from all the research I've done the 45 does have more versatility, and I can shoot both hot and cowboy loads in the rifle. Which means...and this part was big for me...the same rounds I can use in my cap and ball conversions I can use in the rifle. And that same rifle will handle way hot loads.... hotter than I ever hope to shoot out of a Redhawk actually LOL. My reloading equipment is also for 45, and it took months to piece that together because of availability issues. I still need equipment for a caliber I already had, that's totally unrelated to cowboy stuff. And I can use the same lead bullet in my 45 ACP that I can in my cowboy guns or 45 Redhawk. And because my only other Big Bore caliber is 45 ACP, as long as I get the convertible, then I have a revolver that will shoot literally every big bore bullet I own. It streamlines my life, which is good as far as I'm concerned LOL
And I'm one of those wack jobs that just find magic in certain historical things. Even though 44-40 was probably more important, there's a magic to 45 Colt in my mind. Same way there is 45-70.
It's not necessarily that I would have gone wrong going the 44, but 45 just seemed a better choice overall for me. And I know I could just get a Redhawk in 44, but then I have a different caliber that I have to worry about, and to be honest, locally I have had way more success finding 45 ammo than any other large Bore Ammunition. Weather that should have played into it or not, I don't know, but it probably did on some level.
And I know if I got a 44, I'd want to get it converted to 45, and I can't afford that LOL