Many thanks Gents. My take on the gun is that it's in good shape. It certainly looks like it's been hunted over the years with the usual scrapes and dings in the wood that comes from seasons in the fields. It locks up tight, and while there is a little leading in the barrels, nothing that doesn't seem like it would clean up with some elbow grease.
I'll take the gun to the Smith to get the bores & Wall thickness measured properly. At the muzzle, the barrel thickness measures .032 for both. That's with my reloading caliper though and not a micrometer. I plan on reloading for this gun, so the actual PSI information is hugely valuable. Many thanks!
Here's another photo, Dad had great taste:
