Been there and don't regret going with the 454!!
Nuthing wrong with a 454 Casull= specially if you reload. Just keep the chambers clean and the 45lc is just plain fun!!
Heck my accuracy loads for my 7.5 SRH Casull are running right at high book 44mag speeds.
Have never owned a 44mag but reload for a couple and can tell you a critter aint going to know the difference!!
Just don't try to hotrod the 454casull, it will tear up a SRH and TC Encore