I'll 3rd, 4th, or 5th the idea of a chamber cast. It is simple and will end the agnoy and confusion. There are many variations of 22 caliber wildcats based on the 30-30 rim diameter case. I have a 1903 Springfield with a C.C. Johnson barrel that started life as a Lovell and when I acquired it was/still is chambered in .219 ICL. Do yourself a favor and get some cerosafe and cast the chamber.

Thaine

It ain't ignorance that does the most damage, it's knowing so derned much that ain't so! J. Billings