One each for varminter, all-around, defense, big-game, fun.
For me that would be a .22 repeater, '06, 308 Semi-auto/45 ACP/12 ga, 358 STA, 416 of some sort, prolly Rem Mag.
Then throw in lots more fun guns, like a couple Mausers in 6.5 and 8mm, a 45-70 lever, a 22 and 454 revo, a 220 Swift, not sure what else I'd want!
(Scary thought!!!)
If I had to, and was travelling light, I like to think I could get by with the '06 and 45, and 1000 rounds of each.
(Reading too much Heinlein!)