This thread is getting pretty tense.
It is, for a fact.
The experiment that I did lo those many years ago was done out of curiosity, to see what stresses were on the slidestop crosspin.
But I've seen other issues with old 1911 pistols that modern designs don't exhibit because they utilize a different means of stopping he slide...with a more massive lower lug and a cross-member through the frame.
This is why dropping the slide on an empty gun isn't the same with a Glock or even a High Power.
Disassemble a 1911 and slip the slidestop crosspin through the link and swing the link and pin to the in-battery position.
Now, take a close eyeball at the interface between the pin and those tiny lower lug feet.
That is all that ultimately brings the slide to a stop.
I've seen those feet deformed, cracked, and even sheared off in a couple instances.
The modern designs will tolerate a lot more abuse than a 1911. This is no doubt good news for those who abuse their equipment regularly.
Carry on, gentlemen. Smoke'em if ya got'em.