The .30-30 AI, which I don't have, and the .30-40 Krag, which I do, are about the same in the Contender. I've had good success with the 130 Hornady SSP, the Sierra 135 SSP, the 125 Nosler BT, the 150 Nosler BT, and the 150 Remington RN. I presume these would all work fine in the .30-30 AI; fine the one that shoots the best and go shoot what ever you want to shoot with it.
RonF