I apologize to the fans of P.O. Ackerly. I re-read my post, and I got a little carried away in my bias. He did provide lots of good information and did advance our knowledge of firearm strengths.
Yes, destructive testing when carried out in a disciplined manner can be a good thing.
However, most mechanical designers of firearm actions (or anything), design for some pre-set conditions (in this case, a level of brass pressure or bolt pressure). As a professional engineer I would want to first ask what the "design limits" were of an action rather than just experiment up to the point where they seem to be when it breaks.
Having designed real world things and seen others abuse my designs by trying to make them do things they were never intended to do, bothers me. But then again, I am an engineer and it is my training that makes me feel that way. At one job I had we use to refer to part of what we did in our design work as trying to make things "idiot-proof," but we recognized that in a Darwinian-way, mother nature always had a habbit of coming up with a superior idiot that would actively try to defeat whatever safety measures we included.
Having said that, I would now like to confess in homage to P.O. Ackerly and Elmer Keith, that I have asked others which actions are "stronger" because as a handloader, I know that mistakes happen and I want to have strong forgiving firearms, all things being equal.
That is why I love my Ruger Blackhawks and certain other firearms, especially when I handload for them.