Actually, you know what? Be the real cool kid on the block and start with a real rifle-loony cartridge! Get you a 35 Whelen! Enough power for even bears (in some opinions, not in others) And you'll still have a very capable cartridge that can hold its own on distance, and pack enough to punch to knock anything else over. Plus it has plenty of that "shock power" you are after.
If I knew better and could start over again, that is the way I would go, or possibly 9.3x62 for some extra panache
