I am not comfortable with the tolerances being so tight on an FA, but that's just me. It doesn't take much to tie one up (slight crimp pull will put you out of contention). Plus, broken firing pins are well documented as well as trigger return springs. Yes, you can carry spares in the field, but I don't have these issues with a BFR or Ruger for that matter. A friend of mine also managed to break a hammer (main) spring on his .500 JRH FA83, and it was down for the count.

FA's are known for their precision and accuracy. Can't touch them for fit and finish either. Maybe I'm fortunate, but I have a number of lesser revolvers that will shoot much better than I am capable of. For instance, I have a box-stock SRH in .454 that will pull down 1 1/2-inch five-shot groups (with factory loads not tailored to the gun) at 100 yards with a red-dot mounted up top. My .480 SRH is even more accurate. I can only imagine what could be accomplished from an accuracy standpoint with a variable power scope attached. I know FA's are magical, but they aren't the last word in accuracy.