but for most, the gun would stop functioning before you got galling on a Colt.
Or any other stainless gun; the gun would simply lockup & likely before severe galling took place.
True, there might be some level of scuffing but likely not so much that could not be cleaned up.
As Kevin pointed out, most "stainless" guns are not true, pure stainless material as stainless is generally known.
Overly tight fitting guns would certainly make the potential problem worse & I believe that Baer will not offer the 1.5" guarantee on stainless guns simply because he does not want to make them as tight as his carbon steel guns.
But to some degree, this is all just hypotheses as I don't think many of us have locked up a stainless 1911 due to being stainless & lack of lube, but then again, I might be wrong.
MM