What 5 Rifle Chamberings Do You Wish You Owned?

A couple weeks ago I put up a post on the rifle chamberings I currently have in my safe. Great responses from you guys! Loved reading them. Let's change it up a bit: What five rifle chamberings do you not have but wish you did? Here's my list:

.257 Roberts. A classic hunting cartridge that gets the job done with no muss, no fuss. Borrowed  one in a No. 1 for antelope and loved it. It's still available in current production rifles from Ruger in the Model 77 Hawkeye and No. 1 (Lipsey's distributor special).

.264 Win. Mag. These days I'm a big 6.5 Creedmoor fan, but as a kid I was fascinated by the .264 and still want one. Flat and faaaast. I believe the only current production rifle is the Remington M700 Sendero.

7mm-08 Remington. I think this is perhaps the best all-around whitetail cartridge ever. Not too shabby on mulies either. Killed my biggest at just over 200 yards. The buck took two steps and collapsed. Widely available rifles and ammo.

.300 Savage. Because it would justify buying a Savage Model 99. Need I say more?

.404 Jeffery. If I ever go back to Africa for Cape buffalo again, this is what I'd like to take — because it's different and I already killed a couple buffalo with a .375. It's seeing a bit of resurgence now that Hornady is loading factory for it, but rifles are sadly lacking.

Your turn. What five rifle chamberings do you wish you had in your gun safe?