I'm not a big fan of the .308. But the .243 and .270 are 2 of my favorite cartridges. IMO, what you have (.243 and .308) and as much as I like the .270 I'd suggest you go with something bigger for any future hunts. The good old .30-06 comes to mind. But another round I am liking is the .338 Federal or you can go all out and get a .338 win mag.