Thought I had it all figured out once.
When I was in middle school I was reading a book series called Wilderness-David Thompson, set in 1820-1830s. The main character had a Hawken .60, a pair of what I can make out to be Kentucky or Hawken pistols in .55, a knife and a tomahawk. Perfect for that time.
So I thought of comparable rigs for different times. WWII: Garand, a pair of 1911s, your choice of knife and tomahawk.
Then I thought of what I'd carry now...Browning BAR Lightweight Stalker 270 Win w/ mags-lots of mags, a pair of Glock 20s-because pistols come in pairs, a knife and tomahawk.
but...now I'm starting to rethink my choices I made years ago. I picked the BAR 270 cause that's what I hunt deer with and if you're a good shot you can take most anything in North America. G20 because it is good against people, bears, and zombies with high capacity. And the knife and hawk because I've practices a lot with them. I'd also throw in a Benelli with mag extensions...pump or semi-auto.
This lends to some problems. The 270 Winchester is plentiful enough and should do...expecially since my gun is extremely accurate-dime size at 100. The Glocks will be a problem as when I'm out of ammo, I'm out of ammo. So, I guess I'd replace them with G17 or G34-I hate 9mm but they hold more than a 1911.
I'm finding there are too many factors involved for me to pick the perfect weapons. Where will I be going? Who is the enemy? Military? Looters? Rogue Minutemen? AR/AK/SKS/Mini are all plentiful and so is ammo...but man, its useless on larger game when you are hungry.