If you are a reloader, the extra oomph with heavier bullets and romance of the old Krag are good arguements. If you are not a reloader, Krag ammo is 2-3times more expensive and much harder to find and may not offset the difference in performance over the 30-30. I ask because you noted the use of factory ammo in your 30-30 barrel, if you don't reload, the Krag gets expensive and difficult to feed. I do love the krag, but reload for it only.
regards,
Graycg