Could you please address how different power levels impact the dynamics of the 1911?
Any increase in slide velocity will result in greater impact energy and momentum when it hits the frame, and any time higher stresses are imposed on a machine than it was designed to handle, there will be consequences, and anything that you can do to reduce or eliminate the impact stresses will extend the life of the gun.
No arguing that. Anything that is used enough will break or wear out eventually.
The question remains:
How much more impact...and for how long...can the abutments endure before they start to show deformation. And how much deformation can occur before it renders the slide or frame unserviceable? A few thousandths won't make a lot of difference.
So, the final question comes:
How long will it be until the frame and/or slide becomes unserviceable? To recap my own experience and the light flanging and slight setback that I've seen on a couple of the old, soft USGI frames...I dressed the flanging and continued to fire the gun for several thousand rounds without issue...only scrapping the frame when the rails became so worn that it wasn't worth the effort.
But even with the added impact imposed by full-throttle 10mm ammunition...it's not as critical as the other stresses on the gun.
The recoil or "locking" lugs in the slide and on the barrel are under tremendous shearing forces. The breechface is under much higher thrust forces than it was designed to accommodate.
A few thousandths of deformation/setback in the impact abutment is neither here nor there. A few thousandths in the lugs turns the slide and/or barrel into paperweights.
My contention is that a problem would show up in those areas long before any significant peening of the impact abutments became a concern if it ever happened at all. I have seen those those areas become a game-ending problem while the impact abutments showed no sign of peening or deformation.