Hi guys, haven't been on the board in a while. Glad to see it's still golng strong.
I traded for a 625-8 "Performance Center" revolver a year or two ago. It is not an impressive shooter with anything I've tried so far. I had an opportunity to try it in a Ransom rest last week. The best groups were around 6" at 50 yards, the worst over a foot.
I finally did what I should have done long ago: I slugged it. The groove diameter is .454. The chamber throats are all .452.
The only other "new" Smith revolver I've slugged was a M69 that had exactly the same problem: .429 throats and .431 grooves.
Once is happenstance, twice is coincidence, etc. Is this a common state of affairs with the MIM Smiths?