Doug Fattic Thank you, and of course. If I had to re-word my initial response to the question, I suppose it would be something like:

"Generally, frames made using 853 tubing are lighter and stiffer than historical 531 frames because they are constructed using thinner walled tubing with oversized dimensions."

That being the case, this is why I generally think of 853 as "lighter and stiffer," which is precisely the way that Reynolds markets the tubing.

If one intends to replicate the dimensions of an historical 531 frame, the advantage of strength that 853 alloy possesses may be minimized or even adversely affect the ride quality compared to the ideal.

-Gregory