This guy does reboring with three groove 1-9 twist and slower. Most any dia you want. His address is near the bottom of the page, you may want to search this site a little as you should have plenty of money to spend ha ha. Take care Michael and have fun.
God Bless Our Troops -- Retired Tool & Die Maker -- The center of an Aspirin is the same size as the center of the moon, aim for the center.
I have a 30/30 rebored to 38/55 by Jesse and am very pleased.It shoots better than most of my other levers in their original caliber.Shoots Hornady bullets very well.I'm still working on some cast bullet loads.
Here's another fellow that does this kind of work:
Recommend you also call Marlin. They'll rebarrel and fix you up with a Cowboy configuration.
Team 35 Member #94
That's the same guy,Jesse Ocompaugh.He is also working with Mike Belm.