Galling of stainless is no longer a problem.
The trouble was mostly limited to the early "clone" copies of the 1911 made from castings.
Makers like Vega, Crown City, and early AMT and Essex were the guns that galled.
By the time Colt and S&W got into stainless steel, they'd solved the problems by making slides and frames from different alloys and heat treating.
I know of several old customers who have stainless Colt's with over 20,000 rounds with no galling. One has significantly more than that, but has no idea of how many.