A rechamber is all that is needed. Since the .30-30 headspaces on the rim, you just cut the chamber out to the AI specs. Some people report having failure to feed problems from the sharper shoulder. My .30-30 AI is in a Contender rifle, so I can't tell you anything about feeding problems.
I haven't had decent weather to run my barrel over a chrony yet, but I would be skeptical of getting an extra 300 fps. The people who claim these numbers are running much higher pressure than the .30-30. The sharper shoulder reduces backthrust, which hides some of the pressure signs. I think 150-200 would be more realistic. BTW, I am shooting 150 pointed bullets out of my Contender for the increased ballistic efficiency.
Leon