I was faced with this option recently and chose "Plan C." I love my Ithaca and wanted to put a rifled deer barrel on her but... found out I could by ANOTHER GUN ALTOGETHER! :-) For less than the price of a new barrel for the Ithaca, I got a Mossberg 695 Bolt action 12g w/ a rifled barrel. Tack driver (with Win Gold Partition slugs), scope mounts on barrel, butt ugly, and I don't worry about it when I'm crawling through the thick stuff tracking a deer. Anyway, hate to complicate your life, but you must grab any chance at a new gun!

Paul