Humm....
I like WalMart cartridges.
Here are ones which are UNCOMMONLY GREAT.
5.56 Civilian
7x57 Ultra Improved (aka .277 x 30 US 1906)
7.62 x .270 Win. (aka 300 Whelen)
Have owned lots of rifles for bigger cartridges but never really needed them cause I refuse to spend the dollars to hunt such beasts.
Wouldn't your last one actually be a .30-03?