Update
Yesterday when I posted the results of my test fire, I didn't mention that the group was about 6 inches low at 50 yards. At first I thought it was just me. I haven't used open sights in years, old eyes. I was pondering this last night when I remembered a thread from early last month by Don K, and I went back and found it. Ends up I have the same incorrect front sight that he had.
Current front sight is .570, just like his.
Called CS first thing this morning, and after I explained my problem, she put me on hold for about a minute, and she came back and said she had the correct one that she'd send right out. Looks like this may be a common problem with the 357 barrels.
Mute point really, as I plan on scoping it, but it still needs to be right.