OldMarksman,
Yes, I know the L-frame came out before the new K-frames. My point was, if S&W knows how to build a stronger K-frame why didn't they do it back then?
The basis for my "skepticism" is many conversations I've had with a local gunsmith, partially retired, who is constantly being asked by ICOR competitors to "fix" their late model Smith revolvers. He has described numerous problems with the ball-detent lock up system causing yoke mis-alignment that allows the cylinder to hit the barrel stub every time it is closed. Straight from the factory end shake and excessive barrel cylinder gap. And of course endless problems getting a light trigger pull that will allow the floating firing pins to ignite any primer other than Federals. And this isn't always solved by installing an after market, extended firing pin.
And the problem with the floating firing pin is also a personal experience. I have two of these "late model" Smiths that were intended to be carry guns, not competition pieces. Months after getting them I am still trying to get reliable ignition with any ammo/primer (something I require from a defensive weapon) while not having a 16-18# DA pull. The quest goes on.
I've become something of a friendly ear for my friend to vent on so I have heard this chapter and verse, more than once. Hence my "skepticism".
Dave