Some repairs need to be done as they are done. Sometimes there are alternative choices. I won't spend weeks carefully building up surfaces and then filing them off, unless they are worn or broken.
Most old guns weren't made to aerospace tolerances.
They need not be repaired to them either. They need to work as designed.
There's a century of reasons behind why an American Arms gun feels so crude compared to a BSS.
Funny aside, I struck up all the ripples, gouges, scratches, and dents, from a set of 32" Ithaca barrels. I tapered them as perfectly as sunlight allows. I polished them to the most even 400 I've ever reached. A miracle of improvement.
I was so proud.
I rust blued them about 10 cycles, mesmerized by their perfection. My last file stroke would denote my best work.
When done, I attached them and headed to a vintage shoot, eager to show my handiwork.
When I took the skeet field, the glare from those barrels was so bright, it was like striking an arc when I raised them! I had to change guns for fear I'd go blind.
Shot like a 15. Pride goeth before a fall.
Let the technology of the day be itself. Don't perfect Crescent, Baker, and LC Smith sideplate fit. It wasn't ever perfect to start.
JMHO.