I'm wondering how you took pin, slide and other clearances in account after chroming.
Or is the thickness of the crome no factor?
(I couldnt find an answer in your built thread.
Very nice gun!!
From what I read from other people, hard chrome should effectively add so little to the surface that it would be negligible.
I found that not to be the case. There was a tangible difference to me, but that doesn't mean it translated to a measurable difference while testing.
Example:
The gun went out having a very slick slide to frame fitment. It came back rough. I polished up the rails to rectify that.
As far as chroming tolerances go - Nothing to do with the action itself was hard chromed except the hammer. Sear, sear cage, trigger bar, disconnector were not chromed).
I stoned the hammer hooks lightly to remove any hard chrome oddities.