I'm a happy owner of a Taurus RB 6.5" in .454 Casull. I can tell you as the other posts, this is great gun regarding accuracy, good looking,...
But we can't compare apples with oranges, I have also a FA 10" in .454 Casull. The chamber are not made with same tolerance, recoil is completely different the Taurus kicks with full loads as a .44 mag. Taurus RB is a ***** cat compare to the FA. I wouldn't go with bullets heavier than 335 gr out my Taurus. My FA is loaded with a 350 gr bullet LFN (mould from Ballistic cast).
I love my 2 .454 Casull handguns because there are completely differents. Accuracy of Taurus RB is hard to beat, the grip of the RB is very good to absorb the recoil. You can't go wrong with a Taurus, it worth the money spent for this great gun.
Just my 0.02 cts.