My farrier came back from his annual elk hunt REALLY upset. Somehow he arrived back home in Idaho with his .30-06 but no ammunition. No problem, one of the arguments for using .30-06 etc is commonality of ammunition. OH? He went to every retail store and THEY WERE SOLD OUT.It was elk season after all!
Of course, the Venezuelan mauser in 7x57 ( stoned 2 stage trigger, Lyman 48 peep site, Bishop stock) I gifted his daughter as starter rifle was fed with two dusty boxes of 174 grain reading PETERS AMMUNITION nobody wanted filled both their tags.
A survival firearm, or any firearm should always have a minimum supply on hand. I'm not suggesting the 5000 round bunker paranoia, or trading bricks of .22 in a post apocalyptic scenario for gold soveriegns and lima beans.
Just get the caliber YOU like and buy ammo for it.
Oh, my farrier was also upset because NOBODY would share or sell even 5 rounds. It seems he rented a car with California plates, came back to find the tailamps smashed out and go home! With expletives written in lipstick. I asked him why Idaho elk hunters use lipstick and if californians were missing something? :O)