Opinions about brands and caliber preferences on this question lead straight into the weeds. Cutting through the clatter, I’d just opine that, for basic survival, one should have:
1. A rifle capable of knocking down large game or predators, with accuracy, and at distances up to several hundred yards.
2. A pistol for up close and personal protection, which is capable of knocking down most large mammals.
3. A shotgun for hunting, and defense against multiple attackers/predators.
I’m with you flier...., In the weeds,. Seriously since I didn’t see a specific SHTF; civil unrest or wilderness survival. If civil, for me I’ve got a custom bolt action pistol that is as quiet as it comes, for something that in my hands will get the job done out past what a bumper jack can reach. My wheel gun, though in my hands (Mecklek is beyond fast) not as fast as some, will keep the jackals from rushing me until I get my 590 in play. For survival would only need one, though would carry two. I reload so it didn’t matter how long it lasts, either way I’m in play until something else happens supplies isn’t what I’ll run out of first,. Targets perhaps.... Anything I don’t have either would be laying around or I won’t need.