Well...
I am sure you've heard this advice applied to other things, but...
Do the right thing and buy a proper ring/scope set up (if you're going to scope it, that is)
The ruger factory rings just dont hold up, at least in the 2 examples I have seen.
And neither does a scope not specifically made for hard-recoiling handguns.
I wouldn't doubt that part of the reason for the failure of other systems is the Cor Bon 360gr Penetrators at 1500fps the guy was touching off! But really, why else buy a 454 Casull if not to put the Uber ammo through it?
But the weigand 454 mount, weigand 3-ring magnum ring set; and either a nice Burris or Leupold handcannon-worthy scope seem to hold up well.
Again, i have only seen a couple examples. maybe others will have more to say.
C-