Decades ago,
right after the AMT Stainless steel "Hardballer" fiasco [ BUTTERBALLER was more like it!!! ] ...
Randall solved the galling/fit issue with SS built .45 Govt type pistols. Their solution [ greatly simplified ] was to use different hardnesses for the slide and the frame. Randall used Precipitation Hardened 17-4 SS, for both the frame and the slide, and DOUBLE Heat Treated the slides. The slide were so damned hard, you got WHITE sparks when you bead blasted. Milling a rear sight into a Randall slide required Slowwww feed and shallow cuts. So it took longer to work on these than on regular 4140 blue gun steel pistols.
I built up a few dozen SS pistols from Randall components. I campaigned one for several years in IPSC standard class, occasionally shot bowling pin matches with .45 SUPER in a fitted 6" heavy coned barrel, put in a 6" ramped barrel, comped it, and made it into a full house race gun [ 155 Gr .45 bullets at 1200 FPS worked my proprietary comp just fine, thank you ].
Then, when I got out of competition, I bobbed the barrel and slide to 4 1/4", for my SHTF "Command Performance" gun.
I had that Randall pistol for over a decade. Shot tens of thousands of rounds through it, and it was always more accurate than I was. On a good day, with a scope and a rest, I could put a full mag of IPSC rated OMA 180 Gr hard cast bullets into 2" - 2 1/2'" ... at FIFTY yards.
So, it can be done ... accurate reliable SS Colt Govt pistols are possible. Randall, and Detonics too, proved it. But, it is always going to be a bit harder to build one out of SS.
And remember,
there are a lot of different types , brands, and grades of "stainless". And lots of different ways to machine it and harden it. SS works differently than regular 4140 gun steel, and this can both a good thing and a bad thing. Remember when Springfield armoury first came out with their "loaded" M1A, with a SS barrel as part of the package? unfortunately, many of the SS barrels had chambers cut very badly ... rough as hell ...mostly due to the gun smiters not using correct procedures, feed speeds, lubrication etc, and the reamers chattered, galled, and ... well you get the picture.
You can't work SS same as blue and expect the same results. Take a caliper to your blue Mini 14 barrel, and a SS Mini 14 barrel ... notice the difference? The much rougher SS barrel exteriors shows that even Ruger can forget this basic fact. That being said, the Ruger SS Redhawk and Securty Six pistols are some of the best ever made ... so they can do it if they want to.
Of course, as with any opinion expressed on the internet, your personal mileage may vary.
[;{)
