I finally got around to calling Vang Comp - real nice folks there. They did a great trigger job on my S&W 642.
They said that if there're no obvious defects (just like
kozak6 said), they saw no reason to take my money looking at it, just go shoot it. I'll have to shoot a few rounds to find what the pattern looks like, they're figuring it for a 20 yard gun - with the 18" barrel it'll be best suited for home defense.
It is a very smooth operating gun. There's no binding/scaping etc. when working the action and it ejects the rounds without a hitch.
My wife's already said no to another shotgun for hunting, but I'll keep working on it
I've
got to get to the range soon! She did let me buy a new Marlin 336 almost 3 weeks ago and haven't had a chance to take it out yet!! And now I've got to test the shotgun!!!