You'll be dollars ahead if you just sell the barrel, and get something else. The 30/30 is just too big of a case for a 10" barrel, and re-chambering will just allow you to burn more powder. That and the AI won't clean up the throat which is likely the problem.
For a 10" contender in 30 caliber, there are two oustanding choices, the 300 whisper and the 30 Herret. In 35 caliber, the 357 max is an outstanding little round.