While I appreciate all of the analogy of why a Lead Sled should be such a “no no” for double rifles, my experience just hasn't matched up with that. Now I don't load my Sled down in an effort to eliminate my 470's recoil, but when it comes to an attempt to determine a load that will really tighten up a shooting group, I think reduced recoil can be very helpful.
I have had no problems with the perils of cracked stocks, poor regulation, or a differential in shooting precision when stepping from the Sled to sticks. The gun shoots fine and consistently as far as I can tell, and the process of getting it to that point is much more pleasurable.