I am using an old, unused barrel to make a little gun to keep me occupied. I just got the trigger and trigger plate installed, and began to start drilling the hole for the tang bolt. The tang is not wide enough where the bolt should ideally go. see photo:
Sorry about the photo from the bottom of the barrel, but it saved me from taking, uploading the picture. In any case, I can install the bolt from the trigger plate upward like some of the trade guns were made. It will still take a 6/32 tang bolt, but I have one left over from a skinny-tang Tennessee rifle. This miniscule shotgun has a hooked breech, so the tang bolt will seldom need to be removed. I could use a wood screw or two, but my cherry stock blank is splintery, and not very dense.