Welcome Thomas...
Here's a link to the H&R Barrel Accessory site:
http://www.hr1871.com/barrelAcc/index.htmThey will happily supply you with a 30/30 barrel for 82.00 + 15.00 fitting + 10.00 shipping. And sometimes there are barrels sold through the classifieds here on the forum.
NEF also sell scope mounts that fit the holes in the 30/30 barrels that are already drilled and tapped for scope mounts. You will likely need the offset hammer spur as well and most of us use high or medium rings to keep the scope's objective from interfering with hammer fall.
Read the stickies at the top of the page for bunches of info on Handis, and use the search feature to find specific info you want.
Glad to see you out of the shadows. This is a great place with great folks, and great resources. :lol:
Cheers
Kerry