I had a 460 that I sold here on the forum because I prefer a smaller revolver I can wear on my belt, I too have heard of the forcing cone issues but the only barrel issues I had were with my 500. I found that my gun with a leupold 2.5-8X with handloaded Nosler 260 grain Partitions over a max charge of H110 gave me 1 1/2" to 2" groups at 150yds. I always practice with the same loads I hunt with but that is just me, I shoot nothing but full house loads out of my 475s' because that is what I shoot critters with. If you do shoot the 45 or 454 rounds make sure to pay special attention to the cylinder when you clean it as the shorter rounds can cause a carbon ridge to build up. Just my opinion for whatever it's worth. By the way welcome to the site.
Rod

I won't be wronged. I won't be insulted. I won't be laid a-hand on. I don't do these things to other people, and I require the same from them. John Wayne-The Shootist