The search is going poorly so far. I've been to eight gun stores and found six 4" barreled 686s. Of those six, I looked at five. Of those five, only one was a 7 shot, and two of the rest we used.
The first one I looked at was a 6 shot that was reasonably priced, and had no issues I could find. Good to know it's there.
The second and third were used 6 shots (one pre-owned but "unfired"). Both had timing issues and the cylinder wouldn't rotate far enough for the cylinder latch to engage before the hammer dropped, on more than one chamber, with both guns. The "unfired" one was priced higher than the first gun I looked at. The other had heavy wear for the asking price. Hard pass on both.
The fourth was a 6 shot that, during dry fire, had a sticky trigger reset. At one point it simply failed to go forward at all after the hammer dropped, even after I removed my finger from the trigger guard. I had to resort to wiggling the cylinder to get the trigger to move forward. Hard pass.
The fifth was a 7 shot. On one chamber, with a DA pull, it was particularly stiff and struggling to rotate the cylinder fully or bring the hammer back far enough. Trying to pull the hammer back on that same chamber, it was noticable harder than the other six, with much more resistance. The barrel also wasn't clocked quite right, not bad, but not MSRP worthy. All in all, Hard pass.
The sixth was a 6 shot sitting right next to the 7 shot, but it was priced too high compared to the first 686 I had found to even bother looking at. I might go look again if I find the first one is gone when I go back, or discover an issue with it I hadn't previously found.
I halfway expected this. I made the rounds looking for my last GP100 too, and looked at a half dozen. I settled for a longer than standard trigger pull (not much, but I can tell) and a somewhat poorly clocked barrel (that I corrected by installing a BCA Rough Country rear sight). A little trigger work and it's a sweet shooter now, with a solid lockup.